2122102121100 has 72 divisors (see below), whose sum is σ = 6612252570000. Its totient is φ = 522363598080.

The previous prime is 2122102121089. The next prime is 2122102121149. The reversal of 2122102121100 is 11212012212.

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 2122102121100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272060475 + ... + 272068274.

It is an arithmetic number, because the mean of its divisors is an integer number (91836841250).

Almost surely, 2^{2122102121100} is an apocalyptic number.

2122102121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122102121100 is an abundant number, since it is smaller than the sum of its proper divisors (4490150448900).

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

2122102121100 is a wasteful number, since it uses less digits than its factorization.

2122102121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544128779 (or 544128772 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2122102121100 its reverse (11212012212), we get a palindrome (2133314133312).

The spelling of 2122102121100 in words is "two trillion, one hundred twenty-two billion, one hundred two million, one hundred twenty-one thousand, one hundred".