102221112102021 has 48 divisors (see below), whose sum is σ = 163366008062400. Its totient is φ = 61072169391360.

The previous prime is 102221112101989. The next prime is 102221112102061. The reversal of 102221112102021 is 120201211122201.

It is not a de Polignac number, because 102221112102021 - 2⁵ = 102221112101989 is a prime.

It is a super-2 number, since 2×102221112102021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102221112101985 and 102221112102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221112102061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10456810 + ... + 17714036.

It is an arithmetic number, because the mean of its divisors is an integer number (3403458501300).

Almost surely, 2^{102221112102021} is an apocalyptic number.

102221112102021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102221112102021 is a deficient number, since it is larger than the sum of its proper divisors (61144895960379).

102221112102021 is a wasteful number, since it uses less digits than its factorization.

102221112102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259266 (or 7259263 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102221112102021 its reverse (120201211122201), we get a palindrome (222422323224222).

The spelling of 102221112102021 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred two thousand, twenty-one".