30132121200 has 120 divisors (see below), whose sum is σ = 98105814576. Its totient is φ = 7903488000.

The previous prime is 30132121199. The next prime is 30132121207. The reversal of 30132121200 is 212123103.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×30132121200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30132121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30132121207) 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, 132621 + ... + 279020.

Almost surely, 2^30132121200 is an apocalyptic number.

30132121200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30132121200 is an abundant number, since it is smaller than the sum of its proper divisors (67973693376).

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

30132121200 is a wasteful number, since it uses less digits than its factorization.

30132121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411723 (or 411712 counting only the distinct ones).

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

Adding to 30132121200 its reverse (212123103), we get a palindrome (30344244303).

The spelling of 30132121200 in words is "thirty billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred".