122021010111221 has 24 divisors (see below), whose sum is σ = 136394501644800. Its totient is φ = 108998994686400.

The previous prime is 122021010111167. The next prime is 122021010111229. The reversal of 122021010111221 is 122111010120221.

It is a de Polignac number, because none of the positive numbers 2^k-122021010111221 is a prime.

It is a super-2 number, since 2×122021010111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122021010111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021010111229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263085680 + ... + 263549078.

It is an arithmetic number, because the mean of its divisors is an integer number (5683104235200).

Almost surely, 2^{122021010111221} is an apocalyptic number.

It is an amenable number.

122021010111221 is a deficient number, since it is larger than the sum of its proper divisors (14373491533579).

122021010111221 is a wasteful number, since it uses less digits than its factorization.

122021010111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513717 (or 513704 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122021010111221 its reverse (122111010120221), we get a palindrome (244132020231442).

The spelling of 122021010111221 in words is "one hundred twenty-two trillion, twenty-one billion, ten million, one hundred eleven thousand, two hundred twenty-one".