2131322001000 has 128 divisors (see below), whose sum is σ = 6702085877760. Its totient is φ = 563877216000.

The previous prime is 2131322000993. The next prime is 2131322001007. The reversal of 2131322001000 is 1002231312.

It is an interprime number because it is at equal distance from previous prime (2131322000993) and next prime (2131322001007).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2131322001007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2416011 + ... + 3178010.

It is an arithmetic number, because the mean of its divisors is an integer number (52360045920).

Almost surely, 2^{2131322001000} is an apocalyptic number.

2131322001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131322001000 is an abundant number, since it is smaller than the sum of its proper divisors (4570763876760).

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

2131322001000 is a wasteful number, since it uses less digits than its factorization.

2131322001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594172 (or 5594158 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2131322001000 its reverse (1002231312), we get a palindrome (2132324232312).

The spelling of 2131322001000 in words is "two trillion, one hundred thirty-one billion, three hundred twenty-two million, one thousand".