121204122222 has 16 divisors (see below), whose sum is σ = 242422124112. Its totient is φ = 40399060800.

The previous prime is 121204122211. The next prime is 121204122241. The reversal of 121204122222 is 222221402121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463029 + ... + 675872.

It is an arithmetic number, because the mean of its divisors is an integer number (15151382757).

Almost surely, 2^121204122222 is an apocalyptic number.

121204122222 is an abundant number, since it is smaller than the sum of its proper divisors (121218001890).

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

121204122222 is a wasteful number, since it uses less digits than its factorization.

121204122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156643.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121204122222 its reverse (222221402121), we get a palindrome (343425524343).

The spelling of 121204122222 in words is "one hundred twenty-one billion, two hundred four million, one hundred twenty-two thousand, two hundred twenty-two".