113130321021 has 24 divisors (see below), whose sum is σ = 163632749280. Its totient is φ = 75317709600.

The previous prime is 113130321019. The next prime is 113130321023. The reversal of 113130321021 is 120123031311.

113130321021 is a `hidden beast` number, since 1 + 131 + 303 + 210 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (113130321019) and next prime (113130321023).

It is not a de Polignac number, because 113130321021 - 2¹ = 113130321019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113130320985 and 113130321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113130321023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30254970 + ... + 30258708.

It is an arithmetic number, because the mean of its divisors is an integer number (6818031220).

Almost surely, 2^113130321021 is an apocalyptic number.

It is an amenable number.

113130321021 is a deficient number, since it is larger than the sum of its proper divisors (50502428259).

113130321021 is a wasteful number, since it uses less digits than its factorization.

113130321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7417 (or 7414 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 113130321021 its reverse (120123031311), we get a palindrome (233253352332).

The spelling of 113130321021 in words is "one hundred thirteen billion, one hundred thirty million, three hundred twenty-one thousand, twenty-one".