2131302221100 has 180 divisors, whose sum is σ = 7440289388224. Its totient is φ = 524628213120.

The previous prime is 2131302221099. The next prime is 2131302221107. The reversal of 2131302221100 is 11222031312.

2131302221100 is a `hidden beast` number, since 2 + 131 + 302 + 221 + 10 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2131302221107) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 10014844 + ... + 10225443.

Almost surely, 2^{2131302221100} is an apocalyptic number.

2131302221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131302221100 is an abundant number, since it is smaller than the sum of its proper divisors (5308987167124).

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

2131302221100 is a wasteful number, since it uses less digits than its factorization.

2131302221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20240326 (or 20240310 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2131302221100 its reverse (11222031312), we get a palindrome (2142524252412).

The spelling of 2131302221100 in words is "two trillion, one hundred thirty-one billion, three hundred two million, two hundred twenty-one thousand, one hundred".