2122111100142 has 48 divisors (see below), whose sum is σ = 5023510652160. Its totient is φ = 642088112400.

The previous prime is 2122111100111. The next prime is 2122111100143. The reversal of 2122111100142 is 2410011112212.

2122111100142 is a `hidden beast` number, since 212 + 211 + 1 + 100 + 142 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122111100143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8001334 + ... + 8262297.

It is an arithmetic number, because the mean of its divisors is an integer number (104656471920).

Almost surely, 2^{2122111100142} is an apocalyptic number.

2122111100142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2122111100142 is an abundant number, since it is smaller than the sum of its proper divisors (2901399552018).

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

2122111100142 is a wasteful number, since it uses less digits than its factorization.

2122111100142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16264309 (or 16264306 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2122111100142 its reverse (2410011112212), we get a palindrome (4532122212354).

The spelling of 2122111100142 in words is "two trillion, one hundred twenty-two billion, one hundred eleven million, one hundred thousand, one hundred forty-two".