210112122 has 64 divisors (see below), whose sum is σ = 474969600. Its totient is φ = 61404480.

The previous prime is 210112117. The next prime is 210112139. The reversal of 210112122 is 221211012.

It is a super-2 number, since 2×210112122² = 88294207622685768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210112098 and 210112107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339129 + ... + 339747.

It is an arithmetic number, because the mean of its divisors is an integer number (7421400).

Almost surely, 2^210112122 is an apocalyptic number.

210112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 210112122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237484800).

210112122 is an abundant number, since it is smaller than the sum of its proper divisors (264857478).

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

210112122 is a wasteful number, since it uses less digits than its factorization.

210112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

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

The square root of 210112122 is about 14495.2448064874. The cubic root of 210112122 is about 594.4979612833.

Adding to 210112122 its reverse (221211012), we get a palindrome (431323134).

The spelling of 210112122 in words is "two hundred ten million, one hundred twelve thousand, one hundred twenty-two".