210211122 has 48 divisors (see below), whose sum is σ = 482247360. Its totient is φ = 60925920.

The previous prime is 210211121. The next prime is 210211123. The reversal of 210211122 is 221112012.

It is an interprime number because it is at equal distance from previous prime (210211121) and next prime (210211123).

It is a junction number, because it is equal to n+sod(n) for n = 210211098 and 210211107.

It is not an unprimeable number, because it can be changed into a prime (210211121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10404 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (10046820).

Almost surely, 2^210211122 is an apocalyptic number.

210211122 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 210211122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241123680).

210211122 is an abundant number, since it is smaller than the sum of its proper divisors (272036238).

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

210211122 is a wasteful number, since it uses less digits than its factorization.

210211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12639 (or 12628 counting only the distinct ones).

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

The square root of 210211122 is about 14498.6593173300. The cubic root of 210211122 is about 594.5913178783.

Adding to 210211122 its reverse (221112012), we get a palindrome (431323134).

The spelling of 210211122 in words is "two hundred ten million, two hundred eleven thousand, one hundred twenty-two".