2122100121 has 16 divisors (see below), whose sum is σ = 2848274624. Its totient is φ = 1405361664.

The previous prime is 2122100119. The next prime is 2122100159. The reversal of 2122100121 is 1210012212.

It is not a de Polignac number, because 2122100121 - 2¹ = 2122100119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122100097 and 2122100106.

It is not an unprimeable number, because it can be changed into a prime (2122100171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282405 + ... + 289821.

It is an arithmetic number, because the mean of its divisors is an integer number (178017164).

Almost surely, 2^2122100121 is an apocalyptic number.

It is an amenable number.

2122100121 is a deficient number, since it is larger than the sum of its proper divisors (726174503).

2122100121 is a wasteful number, since it uses less digits than its factorization.

2122100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2122100121 is about 46066.2579444000. The cubic root of 2122100121 is about 1285.0557129877.

Adding to 2122100121 its reverse (1210012212), we get a palindrome (3332112333).

The spelling of 2122100121 in words is "two billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-one".