102100220222021 has 16 divisors (see below), whose sum is σ = 123651677136000. Its totient is φ = 82352016940608.

The previous prime is 102100220221933. The next prime is 102100220222083. The reversal of 102100220222021 is 120222022001201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102100220222021 - 2¹⁰ = 102100220220997 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 (102100220222321) 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, 2576056790 + ... + 2576096423.

It is an arithmetic number, because the mean of its divisors is an integer number (7728229821000).

Almost surely, 2^{102100220222021} is an apocalyptic number.

It is an amenable number.

102100220222021 is a deficient number, since it is larger than the sum of its proper divisors (21551456913979).

102100220222021 is a wasteful number, since it uses less digits than its factorization.

102100220222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152153388.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102100220222021 its reverse (120222022001201), we get a palindrome (222322242223222).

The spelling of 102100220222021 in words is "one hundred two trillion, one hundred billion, two hundred twenty million, two hundred twenty-two thousand, twenty-one".