1001722120 has 64 divisors (see below), whose sum is σ = 2579299200. Its totient is φ = 342988800.

The previous prime is 1001722097. The next prime is 1001722153. The reversal of 1001722120 is 212271001.

It is a junction number, because it is equal to n+sod(n) for n = 1001722094 and 1001722103.

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 15 ways as a sum of consecutive naturals, for example, 258195 + ... + 262045.

It is an arithmetic number, because the mean of its divisors is an integer number (40301550).

Almost surely, 2^1001722120 is an apocalyptic number.

1001722120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001722120 is an abundant number, since it is smaller than the sum of its proper divisors (1577577080).

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

1001722120 is a wasteful number, since it uses less digits than its factorization.

1001722120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4798 (or 4794 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1001722120 is about 31649.9939968399. The cubic root of 1001722120 is about 1000.5737107930.

Adding to 1001722120 its reverse (212271001), we get a palindrome (1213993121).

The spelling of 1001722120 in words is "one billion, one million, seven hundred twenty-two thousand, one hundred twenty".