222210121122 has 192 divisors, whose sum is σ = 567375701760. Its totient is φ = 64294560000.

The previous prime is 222210121093. The next prime is 222210121123. The reversal of 222210121122 is 221121012222.

It is a happy number.

222210121122 is a `hidden beast` number, since 222 + 210 + 1 + 211 + 22 = 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 = 222210121095 and 222210121104.

It is not an unprimeable number, because it can be changed into a prime (222210121123) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 123380622 + ... + 123382422.

It is an arithmetic number, because the mean of its divisors is an integer number (2955081780).

Almost surely, 2^222210121122 is an apocalyptic number.

222210121122 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 222210121122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283687850880).

222210121122 is an abundant number, since it is smaller than the sum of its proper divisors (345165580638).

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

222210121122 is a wasteful number, since it uses less digits than its factorization.

222210121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678 (or 2661 counting only the distinct ones).

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

Adding to 222210121122 its reverse (221121012222), we get a palindrome (443331133344).

The spelling of 222210121122 in words is "two hundred twenty-two billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty-two".