130921113 has 4 divisors (see below), whose sum is σ = 174561488. Its totient is φ = 87280740.

The previous prime is 130921103. The next prime is 130921117. The reversal of 130921113 is 311129031.

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: 311129031 = 3 ⋅103709677.

It is not a de Polignac number, because 130921113 - 2¹⁶ = 130855577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 130921113.

It is not an unprimeable number, because it can be changed into a prime (130921117) 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, 21820183 + ... + 21820188.

It is an arithmetic number, because the mean of its divisors is an integer number (43640372).

Almost surely, 2^130921113 is an apocalyptic number.

It is an amenable number.

130921113 is a deficient number, since it is larger than the sum of its proper divisors (43640375).

130921113 is an equidigital number, since it uses as much as digits as its factorization.

130921113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43640374.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 130921113 is about 11442.0764286907. The cubic root of 130921113 is about 507.7733413901.

It can be divided in two parts, 1309 and 21113, that added together give a palindrome (22422).

The spelling of 130921113 in words is "one hundred thirty million, nine hundred twenty-one thousand, one hundred thirteen".