112120421657 has 8 divisors (see below), whose sum is σ = 119188716192. Its totient is φ = 105104680000.

The previous prime is 112120421627. The next prime is 112120421659. The reversal of 112120421657 is 756124021211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112120421657 - 2⁶ = 112120421593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112120421659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13133819 + ... + 13142352.

It is an arithmetic number, because the mean of its divisors is an integer number (14898589524).

Almost surely, 2^112120421657 is an apocalyptic number.

112120421657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

112120421657 is a deficient number, since it is larger than the sum of its proper divisors (7068294535).

112120421657 is a wasteful number, since it uses less digits than its factorization.

112120421657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26276439.

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 112120421657 its reverse (756124021211), we get a palindrome (868244442868).

The spelling of 112120421657 in words is "one hundred twelve billion, one hundred twenty million, four hundred twenty-one thousand, six hundred fifty-seven".