120721112 has 32 divisors (see below), whose sum is σ = 237967200. Its totient is φ = 57302784.

The previous prime is 120721103. The next prime is 120721123. The reversal of 120721112 is 211127021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22814 + ... + 27602.

It is an arithmetic number, because the mean of its divisors is an integer number (7436475).

Almost surely, 2^120721112 is an apocalyptic number.

It is an amenable number.

120721112 is a deficient number, since it is larger than the sum of its proper divisors (117246088).

120721112 is a wasteful number, since it uses less digits than its factorization.

120721112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955 (or 4951 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 120721112 is about 10987.3159597783. The cubic root of 120721112 is about 494.2284507789.

Adding to 120721112 its reverse (211127021), we get a palindrome (331848133).

The spelling of 120721112 in words is "one hundred twenty million, seven hundred twenty-one thousand, one hundred twelve".