121022111111212 has 12 divisors (see below), whose sum is σ = 211796281010160. Its totient is φ = 60508887965456.

The previous prime is 121022111111179. The next prime is 121022111111221. The reversal of 121022111111212 is 212111111220121.

It is a self number, because there is not a number n which added to its sum of digits gives 121022111111212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541771912 + ... + 541995247.

It is an arithmetic number, because the mean of its divisors is an integer number (17649690084180).

Almost surely, 2^{121022111111212} is an apocalyptic number.

It is an amenable number.

121022111111212 is a deficient number, since it is larger than the sum of its proper divisors (90774169898948).

121022111111212 is a wasteful number, since it uses less digits than its factorization.

121022111111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083795080 (or 1083795078 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121022111111212 its reverse (212111111220121), we get a palindrome (333133222331333).

The spelling of 121022111111212 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred eleven million, one hundred eleven thousand, two hundred twelve".