102211122021 has 32 divisors (see below), whose sum is σ = 147168126720. Its totient is φ = 62905920000.

The previous prime is 102211122001. The next prime is 102211122023. The reversal of 102211122021 is 120221112201.

It is not a de Polignac number, because 102211122021 - 2⁵ = 102211121989 is a prime.

It is a super-2 number, since 2×102211122021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211122023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5996491 + ... + 6013511.

It is an arithmetic number, because the mean of its divisors is an integer number (4599003960).

Almost surely, 2^102211122021 is an apocalyptic number.

It is an amenable number.

102211122021 is a deficient number, since it is larger than the sum of its proper divisors (44957004699).

102211122021 is a wasteful number, since it uses less digits than its factorization.

102211122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20077.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102211122021 its reverse (120221112201), we get a palindrome (222432234222).

The spelling of 102211122021 in words is "one hundred two billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".