30131011201220 has 48 divisors (see below), whose sum is σ = 64038643562880. Its totient is φ = 11906977395456.

The previous prime is 30131011201199. The next prime is 30131011201243. The reversal of 30131011201220 is 2210211013103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114805664 + ... + 115067816.

It is an arithmetic number, because the mean of its divisors is an integer number (1334138407560).

Almost surely, 2^{30131011201220} is an apocalyptic number.

It is an amenable number.

30131011201220 is an abundant number, since it is smaller than the sum of its proper divisors (33907632361660).

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

30131011201220 is a wasteful number, since it uses less digits than its factorization.

30131011201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331484 (or 331482 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30131011201220 its reverse (2210211013103), we get a palindrome (32341222214323).

The spelling of 30131011201220 in words is "thirty trillion, one hundred thirty-one billion, eleven million, two hundred one thousand, two hundred twenty".