30131002121 has 16 divisors (see below), whose sum is σ = 33006804480. Its totient is φ = 27278200320.

The previous prime is 30131002093. The next prime is 30131002169. The reversal of 30131002121 is 12120013103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30131002121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131002096 and 30131002105.

It is not an unprimeable number, because it can be changed into a prime (30131004121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2874536 + ... + 2884998.

It is an arithmetic number, because the mean of its divisors is an integer number (2062925280).

Almost surely, 2^30131002121 is an apocalyptic number.

It is an amenable number.

30131002121 is a deficient number, since it is larger than the sum of its proper divisors (2875802359).

30131002121 is a wasteful number, since it uses less digits than its factorization.

30131002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30131002121 its reverse (12120013103), we get a palindrome (42251015224).

The spelling of 30131002121 in words is "thirty billion, one hundred thirty-one million, two thousand, one hundred twenty-one".