113020120321221 has 4 divisors (see below), whose sum is σ = 150693493761632. Its totient is φ = 75346746880812.

The previous prime is 113020120321219. The next prime is 113020120321261. The reversal of 113020120321221 is 122123021020311.

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 not a de Polignac number, because 113020120321221 - 2¹ = 113020120321219 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 (113020120321211) 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, 18836686720201 + ... + 18836686720206.

It is an arithmetic number, because the mean of its divisors is an integer number (37673373440408).

Almost surely, 2^{113020120321221} is an apocalyptic number.

It is an amenable number.

113020120321221 is a deficient number, since it is larger than the sum of its proper divisors (37673373440411).

113020120321221 is an equidigital number, since it uses as much as digits as its factorization.

113020120321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37673373440410.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 113020120321221 its reverse (122123021020311), we get a palindrome (235143141341532).

The spelling of 113020120321221 in words is "one hundred thirteen trillion, twenty billion, one hundred twenty million, three hundred twenty-one thousand, two hundred twenty-one".