2123100311100 has 72 divisors (see below), whose sum is σ = 6168539354880. Its totient is φ = 563791193280.

The previous prime is 2123100311099. The next prime is 2123100311159. The reversal of 2123100311100 is 11130013212.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2123100311100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14733742 + ... + 14877141.

Almost surely, 2^{2123100311100} is an apocalyptic number.

2123100311100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123100311100 is an abundant number, since it is smaller than the sum of its proper divisors (4045439043780).

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

2123100311100 is a wasteful number, since it uses less digits than its factorization.

2123100311100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29611139 (or 29611132 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2123100311100 its reverse (11130013212), we get a palindrome (2134230324312).

The spelling of 2123100311100 in words is "two trillion, one hundred twenty-three billion, one hundred million, three hundred eleven thousand, one hundred".