121221662022 has 32 divisors (see below), whose sum is σ = 272791372800. Its totient is φ = 39895735464.

The previous prime is 121221662011. The next prime is 121221662027. The reversal of 121221662022 is 220266122121.

121221662022 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 2 + 16 + 620 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221662027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14203618 + ... + 14212149.

It is an arithmetic number, because the mean of its divisors is an integer number (8524730400).

Almost surely, 2^121221662022 is an apocalyptic number.

121221662022 is an abundant number, since it is smaller than the sum of its proper divisors (151569710778).

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

121221662022 is a wasteful number, since it uses less digits than its factorization.

121221662022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28415857 (or 28415851 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 121221662022 its reverse (220266122121), we get a palindrome (341487784143).

The spelling of 121221662022 in words is "one hundred twenty-one billion, two hundred twenty-one million, six hundred sixty-two thousand, twenty-two".