221030120031013 has 4 divisors (see below), whose sum is σ = 221030162324608. Its totient is φ = 221030077737420.

The previous prime is 221030120031011. The next prime is 221030120031029. The reversal of 221030120031013 is 310130021030122.

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 221030120031013 - 2¹ = 221030120031011 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 (221030120031011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11984373 + ... + 24200938.

It is an arithmetic number, because the mean of its divisors is an integer number (55257540581152).

Almost surely, 2^{221030120031013} is an apocalyptic number.

It is an amenable number.

221030120031013 is a deficient number, since it is larger than the sum of its proper divisors (42293595).

221030120031013 is an equidigital number, since it uses as much as digits as its factorization.

221030120031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42293594.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221030120031013 its reverse (310130021030122), we get a palindrome (531160141061135).

The spelling of 221030120031013 in words is "two hundred twenty-one trillion, thirty billion, one hundred twenty million, thirty-one thousand, thirteen".