221023032013 has 4 divisors (see below), whose sum is σ = 252597750880. Its totient is φ = 189448313148.

The previous prime is 221023031993. The next prime is 221023032047. The reversal of 221023032013 is 310230320122.

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 221023032013 - 2²¹ = 221020934861 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 (221023032313) 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, 15787359423 + ... + 15787359436.

It is an arithmetic number, because the mean of its divisors is an integer number (63149437720).

Almost surely, 2^221023032013 is an apocalyptic number.

It is an amenable number.

221023032013 is a deficient number, since it is larger than the sum of its proper divisors (31574718867).

221023032013 is an equidigital number, since it uses as much as digits as its factorization.

221023032013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31574718866.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221023032013 its reverse (310230320122), we get a palindrome (531253352135).

The spelling of 221023032013 in words is "two hundred twenty-one billion, twenty-three million, thirty-two thousand, thirteen".