102021211111213 has 2 divisors, whose sum is σ = 102021211111214. Its totient is φ = 102021211111212.

The previous prime is 102021211111151. The next prime is 102021211111427. The reversal of 102021211111213 is 312111112120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93552284651049 + 8468926460164 = 9672243^2 + 2910142^2 .

It is an emirp because it is prime and its reverse (312111112120201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102021211111213 - 2²⁹ = 102020674240301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102021011111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010605555606 + 51010605555607.

It is an arithmetic number, because the mean of its divisors is an integer number (51010605555607).

Almost surely, 2^{102021211111213} is an apocalyptic number.

It is an amenable number.

102021211111213 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021211111213 is an equidigital number, since it uses as much as digits as its factorization.

102021211111213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 102021211111213 its reverse (312111112120201), we get a palindrome (414132323231414).

The spelling of 102021211111213 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, two hundred thirteen".