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222123021021 = 32112243666879
BaseRepresentation
bin1100111011011110010…
…0000101001011011101
3210020100010122121002100
43032313210011023131
512114401443133041
6250013015115313
722022262345366
oct3166744051335
9706303577070
10222123021021
1186224722350
1237070672b39
1317c3b7b5165
14aa72326b6d
155ba07a36b6
hex33b79052dd

222123021021 has 12 divisors (see below), whose sum is σ = 350012033280. Its totient is φ = 134620012680.

The previous prime is 222123021017. The next prime is 222123021031. The reversal of 222123021021 is 120120321222.

222123021021 is a `hidden beast` number, since 2 + 221 + 230 + 210 + 2 + 1 = 666.

It is not a de Polignac number, because 222123021021 - 22 = 222123021017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222123020985 and 222123021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123021031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1121833341 + ... + 1121833538.

It is an arithmetic number, because the mean of its divisors is an integer number (29167669440).

Almost surely, 2222123021021 is an apocalyptic number.

It is an amenable number.

222123021021 is a deficient number, since it is larger than the sum of its proper divisors (127889012259).

222123021021 is a wasteful number, since it uses less digits than its factorization.

222123021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243666896 (or 2243666893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222123021021 its reverse (120120321222), we get a palindrome (342243342243).

The spelling of 222123021021 in words is "two hundred twenty-two billion, one hundred twenty-three million, twenty-one thousand, twenty-one".

Divisors: 1 3 9 11 33 99 2243666879 6731000637 20193001911 24680335669 74041007007 222123021021