121220210021022 has 64 divisors (see below), whose sum is σ = 324064053542400. Its totient is φ = 32811485417280.

The previous prime is 121220210021017. The next prime is 121220210021063. The reversal of 121220210021022 is 220120012022121.

It is a happy number.

121220210021022 is a `hidden beast` number, since 1 + 2 + 1 + 220 + 210 + 0 + 210 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 121220210020986 and 121220210021004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8439160879 + ... + 8439175242.

It is an arithmetic number, because the mean of its divisors is an integer number (5063500836600).

Almost surely, 2^{121220210021022} is an apocalyptic number.

121220210021022 is an abundant number, since it is smaller than the sum of its proper divisors (202843843521378).

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

121220210021022 is a wasteful number, since it uses less digits than its factorization.

121220210021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16878336158 (or 16878336152 counting only the distinct ones).

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

Adding to 121220210021022 its reverse (220120012022121), we get a palindrome (341340222043143).

The spelling of 121220210021022 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred ten million, twenty-one thousand, twenty-two".