2100021112122 has 16 divisors (see below), whose sum is σ = 4202866749312. Its totient is φ = 699536283200.

The previous prime is 2100021112019. The next prime is 2100021112127. The reversal of 2100021112122 is 2212111200012.

It is not an unprimeable number, because it can be changed into a prime (2100021112127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117678879 + ... + 117696722.

It is an arithmetic number, because the mean of its divisors is an integer number (262679171832).

Almost surely, 2^{2100021112122} is an apocalyptic number.

2100021112122 is an abundant number, since it is smaller than the sum of its proper divisors (2102845637190).

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

2100021112122 is a wasteful number, since it uses less digits than its factorization.

2100021112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235377093.

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

Adding to 2100021112122 its reverse (2212111200012), we get a palindrome (4312132312134).

The spelling of 2100021112122 in words is "two trillion, one hundred billion, twenty-one million, one hundred twelve thousand, one hundred twenty-two".