112106921 has 4 divisors (see below), whose sum is σ = 112136532. Its totient is φ = 112077312.

The previous prime is 112106893. The next prime is 112106927. The reversal of 112106921 is 129601211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 129601211 = 5563 ⋅23297.

It can be written as a sum of positive squares in 2 ways, for example, as 70375321 + 41731600 = 8389^2 + 6460^2 .

It is a cyclic number.

It is not a de Polignac number, because 112106921 - 2¹⁰ = 112105897 is a prime.

It is a super-2 number, since 2×112106921² = 25135923472200482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112106927) 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, 8120 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (28034133).

Almost surely, 2^112106921 is an apocalyptic number.

It is an amenable number.

112106921 is a deficient number, since it is larger than the sum of its proper divisors (29611).

112106921 is an equidigital number, since it uses as much as digits as its factorization.

112106921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29610.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 112106921 is about 10588.0555816448. The cubic root of 112106921 is about 482.1817938241.

The spelling of 112106921 in words is "one hundred twelve million, one hundred six thousand, nine hundred twenty-one".