102223223133821 has 2 divisors, whose sum is σ = 102223223133822. Its totient is φ = 102223223133820.

The previous prime is 102223223133817. The next prime is 102223223133923. The reversal of 102223223133821 is 128331322322201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83159608017721 + 19063615116100 = 9119189^2 + 4366190^2 .

It is a cyclic number.

It is not a de Polignac number, because 102223223133821 - 2² = 102223223133817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102223223933821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111611566910 + 51111611566911.

It is an arithmetic number, because the mean of its divisors is an integer number (51111611566911).

Almost surely, 2^{102223223133821} is an apocalyptic number.

It is an amenable number.

102223223133821 is a deficient number, since it is larger than the sum of its proper divisors (1).

102223223133821 is an equidigital number, since it uses as much as digits as its factorization.

102223223133821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 102223223133821 in words is "one hundred two trillion, two hundred twenty-three billion, two hundred twenty-three million, one hundred thirty-three thousand, eight hundred twenty-one".