210222112122 has 48 divisors (see below), whose sum is σ = 510318068832. Its totient is φ = 61981947360.

The previous prime is 210222112117. The next prime is 210222112127. The reversal of 210222112122 is 221211222012.

It is a happy number.

210222112122 is a `hidden beast` number, since 210 + 222 + 112 + 122 = 666.

It is an interprime number because it is at equal distance from previous prime (210222112117) and next prime (210222112127).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 210222112095 and 210222112104.

It is not an unprimeable number, because it can be changed into a prime (210222112127) 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, 14340348 + ... + 14354999.

It is an arithmetic number, because the mean of its divisors is an integer number (10631626434).

Almost surely, 2^210222112122 is an apocalyptic number.

210222112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210222112122 is an abundant number, since it is smaller than the sum of its proper divisors (300095956710).

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

210222112122 is a wasteful number, since it uses less digits than its factorization.

210222112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28695403 (or 28695400 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210222112122 its reverse (221211222012), we get a palindrome (431433334134).

The spelling of 210222112122 in words is "two hundred ten billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twenty-two".