10110221221 has 4 divisors (see below), whose sum is σ = 10113259744. Its totient is φ = 10107182700.

The previous prime is 10110221203. The next prime is 10110221227. The reversal of 10110221221 is 12212201101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12212201101 = 31 ⋅393941971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10110221221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10110221227) 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, 1514265 + ... + 1520926.

It is an arithmetic number, because the mean of its divisors is an integer number (2528314936).

Almost surely, 2^10110221221 is an apocalyptic number.

It is an amenable number.

10110221221 is a deficient number, since it is larger than the sum of its proper divisors (3038523).

10110221221 is an equidigital number, since it uses as much as digits as its factorization.

10110221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038522.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10110221221 its reverse (12212201101), we get a palindrome (22322422322).

The spelling of 10110221221 in words is "ten billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".