102201202000021 has 2 divisors, whose sum is σ = 102201202000022. Its totient is φ = 102201202000020.

The previous prime is 102201201999991. The next prime is 102201202000049. The reversal of 102201202000021 is 120000202102201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99239670771921 + 2961531228100 = 9961911^2 + 1720910^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201202000021 - 2⁹ = 102201201999509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102201201999965 and 102201202000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201202000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100601000010 + 51100601000011.

It is an arithmetic number, because the mean of its divisors is an integer number (51100601000011).

Almost surely, 2^{102201202000021} is an apocalyptic number.

It is an amenable number.

102201202000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201202000021 is an equidigital number, since it uses as much as digits as its factorization.

102201202000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102201202000021 its reverse (120000202102201), we get a palindrome (222201404102222).

The spelling of 102201202000021 in words is "one hundred two trillion, two hundred one billion, two hundred two million, twenty-one", and thus it is an aban number.