122021220120012 has 18 divisors (see below), whose sum is σ = 308442528636788. Its totient is φ = 40673740039992.

The previous prime is 122021220120011. The next prime is 122021220120053. The reversal of 122021220120012 is 210021022120221.

It is a happy number.

122021220120012 is a `hidden beast` number, since 1 + 220 + 21 + 220 + 1 + 200 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (122021220120011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1694739168298 + ... + 1694739168369.

Almost surely, 2^{122021220120012} is an apocalyptic number.

122021220120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122021220120012 is an abundant number, since it is smaller than the sum of its proper divisors (186421308516776).

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

122021220120012 is a wasteful number, since it uses less digits than its factorization.

122021220120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389478336677 (or 3389478336672 counting only the distinct ones).

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

Adding to 122021220120012 its reverse (210021022120221), we get a palindrome (332042242240233).

The spelling of 122021220120012 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred twenty million, one hundred twenty thousand, twelve".