2131121312300 has 18 divisors (see below), whose sum is σ = 4624533247908. Its totient is φ = 852448524880.

The previous prime is 2131121312263. The next prime is 2131121312371. The reversal of 2131121312300 is 32131211312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10655606462 + ... + 10655606661.

Almost surely, 2^{2131121312300} is an apocalyptic number.

2131121312300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131121312300 is an abundant number, since it is smaller than the sum of its proper divisors (2493411935608).

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

2131121312300 is a wasteful number, since it uses less digits than its factorization.

2131121312300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21311213137 (or 21311213130 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2131121312300 its reverse (32131211312), we get a palindrome (2163252523612).

The spelling of 2131121312300 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-one million, three hundred twelve thousand, three hundred".