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202212221111221 = 10119110482205231
BaseRepresentation
bin101101111110100100110011…
…100110111100101110110101
3222111222022002100221100221211
4231332210303212330232311
5203001021112101024341
61554023002325241421
760410231226435466
oct5576446346745665
9874868070840854
10202212221111221
11594817a3179052
121a81a0bb863271
1388aa6b8a43379
1437d11a36ccd6d
15185a00d38b181
hexb7e9339bcbb5

202212221111221 has 8 divisors (see below), whose sum is σ = 205283507263488. Its totient is φ = 199161899370000.

The previous prime is 202212221111209. The next prime is 202212221111249. The reversal of 202212221111221 is 122111122212202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202212221111221 - 237 = 202074782157749 is a prime.

It is a super-2 number, since 2×2022122211112212 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202212221111192 and 202212221111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212221111261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5241083325 + ... + 5241121906.

It is an arithmetic number, because the mean of its divisors is an integer number (25660438407936).

Almost surely, 2202212221111221 is an apocalyptic number.

It is an amenable number.

202212221111221 is a deficient number, since it is larger than the sum of its proper divisors (3071286152267).

202212221111221 is a wasteful number, since it uses less digits than its factorization.

202212221111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10482205523.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 202212221111221 its reverse (122111122212202), we get a palindrome (324323343323423).

The spelling of 202212221111221 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-one".

Divisors: 1 101 191 19291 10482205231 1058702728331 2002101199121 202212221111221