2210120121 has 16 divisors (see below), whose sum is σ = 3226339008. Its totient is φ = 1334625600.

The previous prime is 2210120083. The next prime is 2210120137. The reversal of 2210120121 is 1210210122.

It is not a de Polignac number, because 2210120121 - 2⁷ = 2210119993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210120097 and 2210120106.

It is not an unprimeable number, because it can be changed into a prime (2210120141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111750 + ... + 130031.

It is an arithmetic number, because the mean of its divisors is an integer number (201646188).

Almost surely, 2^2210120121 is an apocalyptic number.

It is an amenable number.

2210120121 is a deficient number, since it is larger than the sum of its proper divisors (1016218887).

2210120121 is a wasteful number, since it uses less digits than its factorization.

2210120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242072.

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

The square root of 2210120121 is about 47011.9146706449. The cubic root of 2210120121 is about 1302.5826607968.

Adding to 2210120121 its reverse (1210210122), we get a palindrome (3420330243).

Subtracting from 2210120121 its reverse (1210210122), we obtain a palindrome (999909999).

The spelling of 2210120121 in words is "two billion, two hundred ten million, one hundred twenty thousand, one hundred twenty-one".