210121122 has 32 divisors (see below), whose sum is σ = 446606784. Its totient is φ = 65676800.

The previous prime is 210121103. The next prime is 210121151. The reversal of 210121122 is 221121012.

It is a junction number, because it is equal to n+sod(n) for n = 210121098 and 210121107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24997 + ... + 32327.

It is an arithmetic number, because the mean of its divisors is an integer number (13956462).

Almost surely, 2^210121122 is an apocalyptic number.

210121122 is an abundant number, since it is smaller than the sum of its proper divisors (236485662).

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

210121122 is a wasteful number, since it uses less digits than its factorization.

210121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634.

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

The square root of 210121122 is about 14495.5552497999. Note that the first 3 decimals coincide. The cubic root of 210121122 is about 594.5064494581.

Adding to 210121122 its reverse (221121012), we get a palindrome (431242134).

The spelling of 210121122 in words is "two hundred ten million, one hundred twenty-one thousand, one hundred twenty-two".