2131100110020 has 144 divisors (see below), whose sum is σ = 7024928395968. Its totient is φ = 481239763200.

The previous prime is 2131100110003. The next prime is 2131100110031. The reversal of 2131100110020 is 200110011312.

It is a super-2 number, since 2×2131100110020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2131100109978 and 2131100110005.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4122631 + ... + 4610670.

It is an arithmetic number, because the mean of its divisors is an integer number (48784224972).

Almost surely, 2^{2131100110020} is an apocalyptic number.

2131100110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131100110020 is an abundant number, since it is smaller than the sum of its proper divisors (4893828285948).

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

2131100110020 is a wasteful number, since it uses less digits than its factorization.

2131100110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733410 (or 8733401 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 2131100110020 its reverse (200110011312), we get a palindrome (2331210121332).

The spelling of 2131100110020 in words is "two trillion, one hundred thirty-one billion, one hundred million, one hundred ten thousand, twenty".