102200522421 has 16 divisors (see below), whose sum is σ = 139078860800. Its totient is φ = 66741515568.

The previous prime is 102200522261. The next prime is 102200522441. The reversal of 102200522421 is 124225002201.

It is not a de Polignac number, because 102200522421 - 2²¹ = 102198425269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102200522441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1667641 + ... + 1727838.

It is an arithmetic number, because the mean of its divisors is an integer number (8692428800).

Almost surely, 2^102200522421 is an apocalyptic number.

It is an amenable number.

102200522421 is a deficient number, since it is larger than the sum of its proper divisors (36878338379).

102200522421 is a wasteful number, since it uses less digits than its factorization.

102200522421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395688.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 102200522421 its reverse (124225002201), we get a palindrome (226425524622).

The spelling of 102200522421 in words is "one hundred two billion, two hundred million, five hundred twenty-two thousand, four hundred twenty-one".