102222012210021 has 20 divisors (see below), whose sum is σ = 166584019899264. Its totient is φ = 61952734672200.

The previous prime is 102222012209939. The next prime is 102222012210037. The reversal of 102222012210021 is 120012210222201.

It is a happy number.

102222012210021 is a `hidden beast` number, since 1 + 0 + 222 + 201 + 221 + 0 + 0 + 21 = 666.

It is not a de Polignac number, because 102222012210021 - 2³³ = 102213422275429 is a prime.

It is a super-2 number, since 2×102222012210021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102222012209976 and 102222012210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222012210091) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57363642325 + ... + 57363644106.

Almost surely, 2^{102222012210021} is an apocalyptic number.

102222012210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102222012210021 is a deficient number, since it is larger than the sum of its proper divisors (64362007689243).

102222012210021 is a wasteful number, since it uses less digits than its factorization.

102222012210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114727286454 (or 114727286445 counting only the distinct ones).

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

Adding to 102222012210021 its reverse (120012210222201), we get a palindrome (222234222432222).

The spelling of 102222012210021 in words is "one hundred two trillion, two hundred twenty-two billion, twelve million, two hundred ten thousand, twenty-one".