102222122000021 has 2 divisors, whose sum is σ = 102222122000022. Its totient is φ = 102222122000020.

The previous prime is 102222121999999. The next prime is 102222122000039. The reversal of 102222122000021 is 120000221222201.

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., 87452235528100 + 14769886471921 = 9351590^2 + 3843161^2 .

It is a cyclic number.

It is not a de Polignac number, because 102222122000021 - 2³⁸ = 101947244093077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102222122000321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111061000010 + 51111061000011.

It is an arithmetic number, because the mean of its divisors is an integer number (51111061000011).

Almost surely, 2^{102222122000021} is an apocalyptic number.

It is an amenable number.

102222122000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102222122000021 is an equidigital number, since it uses as much as digits as its factorization.

102222122000021 is an evil number, because the sum of its binary digits is even.

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

Adding to 102222122000021 its reverse (120000221222201), we get a palindrome (222222343222222).

The spelling of 102222122000021 in words is "one hundred two trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty-one", and thus it is an aban number.