102124220421 has 16 divisors (see below), whose sum is σ = 140702059008. Its totient is φ = 65819097600.

The previous prime is 102124220413. The next prime is 102124220467. The reversal of 102124220421 is 124022421201.

It is not a de Polignac number, because 102124220421 - 2³ = 102124220413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102124228421) 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, 471120 + ... + 652841.

It is an arithmetic number, because the mean of its divisors is an integer number (8793878688).

Almost surely, 2^102124220421 is an apocalyptic number.

It is an amenable number.

102124220421 is a deficient number, since it is larger than the sum of its proper divisors (38577838587).

102124220421 is a wasteful number, since it uses less digits than its factorization.

102124220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124972.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 102124220421 its reverse (124022421201), we get a palindrome (226146641622).

The spelling of 102124220421 in words is "one hundred two billion, one hundred twenty-four million, two hundred twenty thousand, four hundred twenty-one".