30011013021 has 24 divisors (see below), whose sum is σ = 43995931840. Its totient is φ = 18183179520.

The previous prime is 30011013013. The next prime is 30011013041. The reversal of 30011013021 is 12031011003.

It is not a de Polignac number, because 30011013021 - 2³ = 30011013013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30011012988 and 30011013006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011013001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1488816 + ... + 1508838.

Almost surely, 2^30011013021 is an apocalyptic number.

It is an amenable number.

30011013021 is a deficient number, since it is larger than the sum of its proper divisors (13984918819).

30011013021 is a wasteful number, since it uses less digits than its factorization.

30011013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24177 (or 24166 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 30011013021 its reverse (12031011003), we get a palindrome (42042024024).

The spelling of 30011013021 in words is "thirty billion, eleven million, thirteen thousand, twenty-one".