113442244021 has 4 divisors (see below), whose sum is σ = 113454047200. Its totient is φ = 113430440844.

The previous prime is 113442243979. The next prime is 113442244031. The reversal of 113442244021 is 120442244311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120442244311 = 421 ⋅286086091.

It is a cyclic number.

It is not a de Polignac number, because 113442244021 - 2²⁹ = 112905373109 is a prime.

It is a super-2 number, since 2×113442244021² (a number of 23 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 (113442244031) 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, 5887161 + ... + 5906398.

It is an arithmetic number, because the mean of its divisors is an integer number (28363511800).

Almost surely, 2^113442244021 is an apocalyptic number.

It is an amenable number.

113442244021 is a deficient number, since it is larger than the sum of its proper divisors (11803179).

113442244021 is an equidigital number, since it uses as much as digits as its factorization.

113442244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11803178.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 113442244021 its reverse (120442244311), we get a palindrome (233884488332).

The spelling of 113442244021 in words is "one hundred thirteen billion, four hundred forty-two million, two hundred forty-four thousand, twenty-one".