2121100100122 has 16 divisors (see below), whose sum is σ = 3184993949760. Its totient is φ = 1059435596992.

The previous prime is 2121100100117. The next prime is 2121100100131. The reversal of 2121100100122 is 2210010011212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40311843 + ... + 40364425.

It is an arithmetic number, because the mean of its divisors is an integer number (199062121860).

Almost surely, 2^{2121100100122} is an apocalyptic number.

2121100100122 is a deficient number, since it is larger than the sum of its proper divisors (1063893849638).

2121100100122 is a wasteful number, since it uses less digits than its factorization.

2121100100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73397.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2121100100122 its reverse (2210010011212), we get a palindrome (4331110111334).

It can be divided in two parts, 2121100 and 100122, that added together give a palindrome (2221222).

The spelling of 2121100100122 in words is "two trillion, one hundred twenty-one billion, one hundred million, one hundred thousand, one hundred twenty-two".