30112320021 has 16 divisors (see below), whose sum is σ = 45889019904. Its totient is φ = 17205697584.

The previous prime is 30112320013. The next prime is 30112320041. The reversal of 30112320021 is 12002321103.

It is not a de Polignac number, because 30112320021 - 2³ = 30112320013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30112320011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261556 + ... + 358658.

It is an arithmetic number, because the mean of its divisors is an integer number (2868063744).

Almost surely, 2^30112320021 is an apocalyptic number.

It is an amenable number.

30112320021 is a deficient number, since it is larger than the sum of its proper divisors (15776699883).

30112320021 is a wasteful number, since it uses less digits than its factorization.

30112320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111880.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30112320021 its reverse (12002321103), we get a palindrome (42114641124).

The spelling of 30112320021 in words is "thirty billion, one hundred twelve million, three hundred twenty thousand, twenty-one".