221211032321013 has 16 divisors (see below), whose sum is σ = 337090619873280. Its totient is φ = 126403625914416.

The previous prime is 221211032320991. The next prime is 221211032321053. The reversal of 221211032321013 is 310123230112122.

It is not a de Polignac number, because 221211032321013 - 2⁵ = 221211032320981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211032321053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110579593 + ... + 112562286.

It is an arithmetic number, because the mean of its divisors is an integer number (21068163742080).

Almost surely, 2^{221211032321013} is an apocalyptic number.

It is an amenable number.

221211032321013 is a deficient number, since it is larger than the sum of its proper divisors (115879587552267).

221211032321013 is a wasteful number, since it uses less digits than its factorization.

221211032321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223189096.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221211032321013 its reverse (310123230112122), we get a palindrome (531334262433135).

The spelling of 221211032321013 in words is "two hundred twenty-one trillion, two hundred eleven billion, thirty-two million, three hundred twenty-one thousand, thirteen".