102222100222021 has 32 divisors (see below), whose sum is σ = 112325739724800. Its totient is φ = 92455157108160.

The previous prime is 102222100222003. The next prime is 102222100222037. The reversal of 102222100222021 is 120222001222201.

It is a cyclic number.

It is not a de Polignac number, because 102222100222021 - 2²¹ = 102222098124869 is a prime.

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 102222100222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222100222051) 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, 844478020 + ... + 844599058.

It is an arithmetic number, because the mean of its divisors is an integer number (3510179366400).

Almost surely, 2^{102222100222021} is an apocalyptic number.

It is an amenable number.

102222100222021 is a deficient number, since it is larger than the sum of its proper divisors (10103639502779).

102222100222021 is a wasteful number, since it uses less digits than its factorization.

102222100222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126769.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 102222100222021 its reverse (120222001222201), we get a palindrome (222444101444222).

The spelling of 102222100222021 in words is "one hundred two trillion, two hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, twenty-one".