30112121212131 has 64 divisors (see below), whose sum is σ = 50622181171200. Its totient is φ = 15523855877376.

The previous prime is 30112121212127. The next prime is 30112121212171. The reversal of 30112121212131 is 13121212121103.

It is not a de Polignac number, because 30112121212131 - 2² = 30112121212127 is a prime.

It is a super-2 number, since 2×30112121212131² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 30112121212098 and 30112121212107.

It is not an unprimeable number, because it can be changed into a prime (30112121212171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5144266 + ... + 9310623.

It is an arithmetic number, because the mean of its divisors is an integer number (790971580800).

Almost surely, 2^{30112121212131} is an apocalyptic number.

30112121212131 is a deficient number, since it is larger than the sum of its proper divisors (20510059959069).

30112121212131 is a wasteful number, since it uses less digits than its factorization.

30112121212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14455168.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 30112121212131 its reverse (13121212121103), we get a palindrome (43233333333234).

The spelling of 30112121212131 in words is "thirty trillion, one hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-one".