112721801 has 12 divisors (see below), whose sum is σ = 116576400. Its totient is φ = 108962280.

The previous prime is 112721743. The next prime is 112721803. The reversal of 112721801 is 108127211.

It is not a de Polignac number, because 112721801 - 2²⁶ = 45612937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112721803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297230 + ... + 297608.

It is an arithmetic number, because the mean of its divisors is an integer number (9714700).

Almost surely, 2^112721801 is an apocalyptic number.

It is an amenable number.

112721801 is a deficient number, since it is larger than the sum of its proper divisors (3854599).

112721801 is an frugal number, since it uses more digits than its factorization.

112721801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 112721801 is about 10617.0523687133. The cubic root of 112721801 is about 483.0617381256.

The spelling of 112721801 in words is "one hundred twelve million, seven hundred twenty-one thousand, eight hundred one".