113032421021 has 4 divisors (see below), whose sum is σ = 121727222652. Its totient is φ = 104337619392.

The previous prime is 113032421009. The next prime is 113032421023. The reversal of 113032421021 is 120124230311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120124230311 = 1033 ⋅116286767.

It can be written as a sum of positive squares in 2 ways, for example, as 76975728025 + 36056692996 = 277445^2 + 189886^2 .

It is a cyclic number.

It is not a de Polignac number, because 113032421021 - 2⁶ = 113032420957 is a prime.

It is a super-3 number, since 3×113032421021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113032420984 and 113032421002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113032421023) 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, 4347400796 + ... + 4347400821.

It is an arithmetic number, because the mean of its divisors is an integer number (30431805663).

Almost surely, 2^113032421021 is an apocalyptic number.

It is an amenable number.

113032421021 is a deficient number, since it is larger than the sum of its proper divisors (8694801631).

113032421021 is an equidigital number, since it uses as much as digits as its factorization.

113032421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8694801630.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 113032421021 its reverse (120124230311), we get a palindrome (233156651332).

The spelling of 113032421021 in words is "one hundred thirteen billion, thirty-two million, four hundred twenty-one thousand, twenty-one".