113122021209 has 4 divisors (see below), whose sum is σ = 150829361616. Its totient is φ = 75414680804.

The previous prime is 113122021193. The next prime is 113122021211. The reversal of 113122021209 is 902120221311.

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 113122021209 - 2⁴ = 113122021193 is a prime.

It is a super-4 number, since 4×113122021209⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (113122021289) 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, 18853670199 + ... + 18853670204.

It is an arithmetic number, because the mean of its divisors is an integer number (37707340404).

Almost surely, 2^113122021209 is an apocalyptic number.

It is an amenable number.

113122021209 is a deficient number, since it is larger than the sum of its proper divisors (37707340407).

113122021209 is an equidigital number, since it uses as much as digits as its factorization.

113122021209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37707340406.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 113122021209 in words is "one hundred thirteen billion, one hundred twenty-two million, twenty-one thousand, two hundred nine".