122021102111212 has 6 divisors (see below), whose sum is σ = 213536928694628. Its totient is φ = 61010551055604.

The previous prime is 122021102111089. The next prime is 122021102111239. The reversal of 122021102111212 is 212111201120221.

It is a happy number.

It is a super-2 number, since 2×122021102111212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122021102111212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15252637763898 + ... + 15252637763905.

Almost surely, 2^{122021102111212} is an apocalyptic number.

It is an amenable number.

122021102111212 is a deficient number, since it is larger than the sum of its proper divisors (91515826583416).

122021102111212 is a wasteful number, since it uses less digits than its factorization.

122021102111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30505275527807 (or 30505275527805 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122021102111212 its reverse (212111201120221), we get a palindrome (334132303231433).

Subtracting 122021102111212 from its reverse (212111201120221), we obtain a palindrome (90090099009009).

The spelling of 122021102111212 in words is "one hundred twenty-two trillion, twenty-one billion, one hundred two million, one hundred eleven thousand, two hundred twelve".