2131220020312 has 32 divisors (see below), whose sum is σ = 4139974634400. Its totient is φ = 1027335988224.

The previous prime is 2131220020309. The next prime is 2131220020313. The reversal of 2131220020312 is 2130200221312.

It is a self number, because there is not a number n which added to its sum of digits gives 2131220020312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131220020313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6668748 + ... + 6981019.

It is an arithmetic number, because the mean of its divisors is an integer number (129374207325).

Almost surely, 2^{2131220020312} is an apocalyptic number.

It is an amenable number.

2131220020312 is a deficient number, since it is larger than the sum of its proper divisors (2008754614088).

2131220020312 is a wasteful number, since it uses less digits than its factorization.

2131220020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13650475 (or 13650471 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2131220020312 its reverse (2130200221312), we get a palindrome (4261420241624).

The spelling of 2131220020312 in words is "two trillion, one hundred thirty-one billion, two hundred twenty million, twenty thousand, three hundred twelve".