122121110211212 has 24 divisors (see below), whose sum is σ = 254861447398656. Its totient is φ = 50062070024208.

The previous prime is 122121110211193. The next prime is 122121110211223. The reversal of 122121110211212 is 212112011121221.

It is a happy 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, 94814525918 + ... + 94814527205.

It is an arithmetic number, because the mean of its divisors is an integer number (10619226974944).

Almost surely, 2^{122121110211212} is an apocalyptic number.

It is an amenable number.

122121110211212 is an abundant number, since it is smaller than the sum of its proper divisors (132740337187444).

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

122121110211212 is a wasteful number, since it uses less digits than its factorization.

122121110211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189629053157 (or 189629053155 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122121110211212 its reverse (212112011121221), we get a palindrome (334233121332433).

The spelling of 122121110211212 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, two hundred twelve".