30121131100000 has 72 divisors (see below), whose sum is σ = 74121477234336. Its totient is φ = 12048452400000.

The previous prime is 30121131099959. The next prime is 30121131100007. The reversal of 30121131100000 is 113112103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121131100007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150505656 + ... + 150705655.

It is an arithmetic number, because the mean of its divisors is an integer number (1029464961588).

Almost surely, 2^{30121131100000} is an apocalyptic number.

It is an amenable number.

30121131100000 is an abundant number, since it is smaller than the sum of its proper divisors (44000346134336).

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

30121131100000 is an frugal number, since it uses more digits than its factorization.

30121131100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301211346 (or 301211318 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 30121131100000 its reverse (113112103), we get a palindrome (30121244212103).

The spelling of 30121131100000 in words is "thirty trillion, one hundred twenty-one billion, one hundred thirty-one million, one hundred thousand".