801722120 has 16 divisors (see below), whose sum is σ = 1803874860. Its totient is φ = 320688832.

The previous prime is 801722111. The next prime is 801722123. The reversal of 801722120 is 21227108.

801722120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 769618564 + 32103556 = 27742^2 + 5666^2 .

It is not an unprimeable number, because it can be changed into a prime (801722123) 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, 10021487 + ... + 10021566.

Almost surely, 2^801722120 is an apocalyptic number.

It is an amenable number.

801722120 is an abundant number, since it is smaller than the sum of its proper divisors (1002152740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801722120 is a wasteful number, since it uses less digits than its factorization.

801722120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20043064 (or 20043060 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 801722120 is about 28314.6979500047. The cubic root of 801722120 is about 928.9834037365.

Adding to 801722120 its reverse (21227108), we get a palindrome (822949228).

The spelling of 801722120 in words is "eight hundred one million, seven hundred twenty-two thousand, one hundred twenty".