112129521 has 16 divisors (see below), whose sum is σ = 171085824. Its totient is φ = 63990864.

The previous prime is 112129517. The next prime is 112129543. The reversal of 112129521 is 125921211.

It is not a de Polignac number, because 112129521 - 2² = 112129517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112129491 and 112129500.

It is not an unprimeable number, because it can be changed into a prime (112129571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15520 + ... + 21566.

It is an arithmetic number, because the mean of its divisors is an integer number (10692864).

Almost surely, 2^112129521 is an apocalyptic number.

It is an amenable number.

112129521 is a deficient number, since it is larger than the sum of its proper divisors (58956303).

112129521 is an equidigital number, since it uses as much as digits as its factorization.

112129521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940.

The product of its digits is 360, while the sum is 24.

The square root of 112129521 is about 10589.1227681995. The cubic root of 112129521 is about 482.2141931807.

The spelling of 112129521 in words is "one hundred twelve million, one hundred twenty-nine thousand, five hundred twenty-one".