130021772 has 12 divisors (see below), whose sum is σ = 227624880. Its totient is φ = 64986096.

The previous prime is 130021747. The next prime is 130021789. The reversal of 130021772 is 277120031.

It is a super-2 number, since 2×130021772² = 33811322388039968, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10754 + ... + 19382.

It is an arithmetic number, because the mean of its divisors is an integer number (18968740).

Almost surely, 2^130021772 is an apocalyptic number.

It is an amenable number.

130021772 is a deficient number, since it is larger than the sum of its proper divisors (97603108).

130021772 is a wasteful number, since it uses less digits than its factorization.

130021772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400 (or 12398 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 130021772 is about 11402.7089763793. The cubic root of 130021772 is about 506.6079804681.

The spelling of 130021772 in words is "one hundred thirty million, twenty-one thousand, seven hundred seventy-two".