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220121102 = 2197558683
BaseRepresentation
bin11010001111011…
…00100000001110
3120100012022101102
431013230200032
5422322333402
633501543102
75311666325
oct1507544016
9510168342
10220121102
11103286273
1261874a92
13367b0896
142133d0bc
15144d1102
hexd1ec80e

220121102 has 8 divisors (see below), whose sum is σ = 331858296. Its totient is φ = 109501672.

The previous prime is 220121093. The next prime is 220121141. The reversal of 220121102 is 201121022.

Adding to 220121102 its reverse (201121022), we get a palindrome (421242124).

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278948 + ... + 279735.

It is an arithmetic number, because the mean of its divisors is an integer number (41482287).

Almost surely, 2220121102 is an apocalyptic number.

220121102 is a deficient number, since it is larger than the sum of its proper divisors (111737194).

220121102 is a wasteful number, since it uses less digits than its factorization.

220121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558882.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 220121102 is about 14836.4787601371. The cubic root of 220121102 is about 603.7918215210.

The spelling of 220121102 in words is "two hundred twenty million, one hundred twenty-one thousand, one hundred two".

Divisors: 1 2 197 394 558683 1117366 110060551 220121102