222011121222 has 48 divisors (see below), whose sum is σ = 524811607632. Its totient is φ = 67268655360.

The previous prime is 222011121191. The next prime is 222011121239. The reversal of 222011121222 is 222121110222.

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 = 222011121195 and 222011121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1886658 + ... + 2000874.

It is an arithmetic number, because the mean of its divisors is an integer number (10933575159).

Almost surely, 2^222011121222 is an apocalyptic number.

222011121222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222011121222 is an abundant number, since it is smaller than the sum of its proper divisors (302800486410).

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

222011121222 is a wasteful number, since it uses less digits than its factorization.

222011121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124053 (or 124050 counting only the distinct ones).

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

Adding to 222011121222 its reverse (222121110222), we get a palindrome (444132231444).

The spelling of 222011121222 in words is "two hundred twenty-two billion, eleven million, one hundred twenty-one thousand, two hundred twenty-two".