2131021212330 has 32 divisors (see below), whose sum is σ = 5239193617728. Its totient is φ = 554412022400.

The previous prime is 2131021212323. The next prime is 2131021212367. The reversal of 2131021212330 is 332121201312.

It is a junction number, because it is equal to n+sod(n) for n = 2131021212297 and 2131021212306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866267556 + ... + 866270015.

It is an arithmetic number, because the mean of its divisors is an integer number (163724800554).

Almost surely, 2^{2131021212330} is an apocalyptic number.

2131021212330 is an abundant number, since it is smaller than the sum of its proper divisors (3108172405398).

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

2131021212330 is a wasteful number, since it uses less digits than its factorization.

2131021212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732537622.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2131021212330 its reverse (332121201312), we get a palindrome (2463142413642).

The spelling of 2131021212330 in words is "two trillion, one hundred thirty-one billion, twenty-one million, two hundred twelve thousand, three hundred thirty".