102212210122021 has 2 divisors, whose sum is σ = 102212210122022. Its totient is φ = 102212210122020.

The previous prime is 102212210122013. The next prime is 102212210122067. The reversal of 102212210122021 is 120221012212201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57184902684900 + 45027307437121 = 7562070^2 + 6710239^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212210122021 - 2³ = 102212210122013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102212210122021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102212210122091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106105061010 + 51106105061011.

It is an arithmetic number, because the mean of its divisors is an integer number (51106105061011).

Almost surely, 2^{102212210122021} is an apocalyptic number.

It is an amenable number.

102212210122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212210122021 is an equidigital number, since it uses as much as digits as its factorization.

102212210122021 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 19.

Adding to 102212210122021 its reverse (120221012212201), we get a palindrome (222433222334222).

The spelling of 102212210122021 in words is "one hundred two trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-two thousand, twenty-one".