10013201221 has 4 divisors (see below), whose sum is σ = 10336207744. Its totient is φ = 9690194700.

The previous prime is 10013201203. The next prime is 10013201239. The reversal of 10013201221 is 12210231001.

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 an interprime number because it is at equal distance from previous prime (10013201203) and next prime (10013201239).

It is a cyclic number.

It is not a de Polignac number, because 10013201221 - 2⁵ = 10013201189 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 (10013201021) 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, 161503215 + ... + 161503276.

It is an arithmetic number, because the mean of its divisors is an integer number (2584051936).

Almost surely, 2^10013201221 is an apocalyptic number.

It is an amenable number.

10013201221 is a deficient number, since it is larger than the sum of its proper divisors (323006523).

10013201221 is an equidigital number, since it uses as much as digits as its factorization.

10013201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323006522.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10013201221 its reverse (12210231001), we get a palindrome (22223432222).

The spelling of 10013201221 in words is "ten billion, thirteen million, two hundred one thousand, two hundred twenty-one".