113312222012221 has 4 divisors (see below), whose sum is σ = 113570336413600. Its totient is φ = 113054107610844.

The previous prime is 113312222012173. The next prime is 113312222012293. The reversal of 113312222012221 is 122210222213311.

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 113312222012221 - 2¹³ = 113312222004029 is a prime.

It is a super-2 number, since 2×113312222012221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113312222018221) 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, 129057200031 + ... + 129057200908.

It is an arithmetic number, because the mean of its divisors is an integer number (28392584103400).

Almost surely, 2^{113312222012221} is an apocalyptic number.

It is an amenable number.

113312222012221 is a deficient number, since it is larger than the sum of its proper divisors (258114401379).

113312222012221 is an equidigital number, since it uses as much as digits as its factorization.

113312222012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258114401378.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 113312222012221 its reverse (122210222213311), we get a palindrome (235522444225532).

The spelling of 113312222012221 in words is "one hundred thirteen trillion, three hundred twelve billion, two hundred twenty-two million, twelve thousand, two hundred twenty-one".