102210112202221 has 4 divisors (see below), whose sum is σ = 102210332878912. Its totient is φ = 102209891525532.

The previous prime is 102210112202167. The next prime is 102210112202243. The reversal of 102210112202221 is 122202211012201.

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 102210112202221 - 2²⁷ = 102209977984493 is a prime.

It is a super-3 number, since 3×102210112202221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210112202281) 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, 109642131 + ... + 110570416.

It is an arithmetic number, because the mean of its divisors is an integer number (25552583219728).

Almost surely, 2^{102210112202221} is an apocalyptic number.

It is an amenable number.

102210112202221 is a deficient number, since it is larger than the sum of its proper divisors (220676691).

102210112202221 is an equidigital number, since it uses as much as digits as its factorization.

102210112202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220676690.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102210112202221 its reverse (122202211012201), we get a palindrome (224412323214422).

The spelling of 102210112202221 in words is "one hundred two trillion, two hundred ten billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".