2131233121300 has 36 divisors (see below), whose sum is σ = 4665703118076. Its totient is φ = 844949056000.

The previous prime is 2131233121291. The next prime is 2131233121307. The reversal of 2131233121300 is 31213321312.

It can be written as a sum of positive squares in 6 ways, for example, as 933797534224 + 1197435587076 = 966332^2 + 1094274^2 .

It is a super-2 number, since 2×2131233121300² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131233121307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94291051 + ... + 94313650.

It is an arithmetic number, because the mean of its divisors is an integer number (129602864391).

Almost surely, 2^{2131233121300} is an apocalyptic number.

2131233121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131233121300 is an abundant number, since it is smaller than the sum of its proper divisors (2534469996776).

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

2131233121300 is a wasteful number, since it uses less digits than its factorization.

2131233121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188604828 (or 188604821 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2131233121300 its reverse (31213321312), we get a palindrome (2162446442612).

The spelling of 2131233121300 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-three million, one hundred twenty-one thousand, three hundred".