30021131200 has 42 divisors (see below), whose sum is σ = 73870749896. Its totient is φ = 12008451840.

The previous prime is 30021131191. The next prime is 30021131221. The reversal of 30021131200 is 213112003.

It is a super-2 number, since 2×30021131200² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 9380004 + ... + 9383203.

Almost surely, 2^30021131200 is an apocalyptic number.

It is an amenable number.

30021131200 is an abundant number, since it is smaller than the sum of its proper divisors (43849618696).

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

30021131200 is a wasteful number, since it uses less digits than its factorization.

30021131200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18763229 (or 18763214 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30021131200 its reverse (213112003), we get a palindrome (30234243203).

The spelling of 30021131200 in words is "thirty billion, twenty-one million, one hundred thirty-one thousand, two hundred".