102200131221 has 4 divisors (see below), whose sum is σ = 136266841632. Its totient is φ = 68133420812.

The previous prime is 102200131177. The next prime is 102200131249. The reversal of 102200131221 is 122131002201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102200131221 - 2¹⁸ = 102199869077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102200131221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102200131321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17033355201 + ... + 17033355206.

It is an arithmetic number, because the mean of its divisors is an integer number (34066710408).

Almost surely, 2^102200131221 is an apocalyptic number.

It is an amenable number.

102200131221 is a deficient number, since it is larger than the sum of its proper divisors (34066710411).

102200131221 is an equidigital number, since it uses as much as digits as its factorization.

102200131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34066710410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 102200131221 its reverse (122131002201), we get a palindrome (224331133422).

The spelling of 102200131221 in words is "one hundred two billion, two hundred million, one hundred thirty-one thousand, two hundred twenty-one".