210122112222 has 216 divisors, whose sum is σ = 541519687800. Its totient is φ = 58675985280.

The previous prime is 210122112209. The next prime is 210122112287. The reversal of 210122112222 is 222211221012.

It is a happy number.

210122112222 is a `hidden beast` number, since 210 + 1 + 221 + 12 + 222 = 666.

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 = 210122112195 and 210122112204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 56650104 + ... + 56653812.

Almost surely, 2^210122112222 is an apocalyptic number.

210122112222 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 210122112222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270759843900).

210122112222 is an abundant number, since it is smaller than the sum of its proper divisors (331397575578).

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

210122112222 is a wasteful number, since it uses less digits than its factorization.

210122112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832 (or 3781 counting only the distinct ones).

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

Adding to 210122112222 its reverse (222211221012), we get a palindrome (432333333234).

The spelling of 210122112222 in words is "two hundred ten billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twenty-two".