121212222102 has 12 divisors (see below), whose sum is σ = 262626481260. Its totient is φ = 40404074028.

The previous prime is 121212222097. The next prime is 121212222119. The reversal of 121212222102 is 201222212121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6734012339 = 121212222102 / (1 + 2 + 1 + 2 + 1 + 2 + 2 + 2 + 2 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3367006152 + ... + 3367006187.

It is an arithmetic number, because the mean of its divisors is an integer number (21885540105).

Almost surely, 2^121212222102 is an apocalyptic number.

121212222102 is an abundant number, since it is smaller than the sum of its proper divisors (141414259158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121212222102 is a wasteful number, since it uses less digits than its factorization.

121212222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734012347 (or 6734012344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121212222102 its reverse (201222212121), we get a palindrome (322434434223).

The spelling of 121212222102 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, one hundred two".