2131121312330 has 16 divisors (see below), whose sum is σ = 3836035056744. Its totient is φ = 852444815040.

The previous prime is 2131121312263. The next prime is 2131121312371. The reversal of 2131121312330 is 332131211312.

It can be written as a sum of positive squares in 4 ways, for example, as 1796594417641 + 334526894689 = 1340371^2 + 578383^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2131121312296 and 2131121312305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3943040 + ... + 4450820.

Almost surely, 2^{2131121312330} is an apocalyptic number.

2131121312330 is a deficient number, since it is larger than the sum of its proper divisors (1704913744414).

2131121312330 is a wasteful number, since it uses less digits than its factorization.

2131121312330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927481.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2131121312330 its reverse (332131211312), we get a palindrome (2463252523642).

The spelling of 2131121312330 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-one million, three hundred twelve thousand, three hundred thirty".