10102102221 has 4 divisors (see below), whose sum is σ = 13469469632. Its totient is φ = 6734734812.

The previous prime is 10102102211. The next prime is 10102102247. The reversal of 10102102221 is 12220120101.

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 not a de Polignac number, because 10102102221 - 2⁷ = 10102102093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102102197 and 10102102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102102201) 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, 1683683701 + ... + 1683683706.

It is an arithmetic number, because the mean of its divisors is an integer number (3367367408).

Almost surely, 2^10102102221 is an apocalyptic number.

It is an amenable number.

10102102221 is a deficient number, since it is larger than the sum of its proper divisors (3367367411).

10102102221 is an equidigital number, since it uses as much as digits as its factorization.

10102102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367367410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10102102221 its reverse (12220120101), we get a palindrome (22322222322).

The spelling of 10102102221 in words is "ten billion, one hundred two million, one hundred two thousand, two hundred twenty-one".