222212101122 has 96 divisors (see below), whose sum is σ = 559037666304. Its totient is φ = 63044006400.

The previous prime is 222212100977. The next prime is 222212101127. The reversal of 222212101122 is 221101212222.

It is a happy number.

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 = 222212101095 and 222212101104.

It is not an unprimeable number, because it can be changed into a prime (222212101127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 470088 + ... + 815724.

It is an arithmetic number, because the mean of its divisors is an integer number (5823309024).

Almost surely, 2^222212101122 is an apocalyptic number.

222212101122 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 222212101122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279518833152).

222212101122 is an abundant number, since it is smaller than the sum of its proper divisors (336825565182).

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

222212101122 is a wasteful number, since it uses less digits than its factorization.

222212101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345864 (or 345861 counting only the distinct ones).

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

Adding to 222212101122 its reverse (221101212222), we get a palindrome (443313313344).

Subtracting from 222212101122 its reverse (221101212222), we obtain a square (1110888900 = 33330²).

The spelling of 222212101122 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred one thousand, one hundred twenty-two".