222222001121112 has 128 divisors (see below), whose sum is σ = 599184942048000. Its totient is φ = 68449269749760.

The previous prime is 222222001121101. The next prime is 222222001121173. The reversal of 222222001121112 is 211121100222222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87156663 + ... + 89670105.

It is an arithmetic number, because the mean of its divisors is an integer number (4681132359750).

Almost surely, 2^{222222001121112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222222001121112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299592471024000).

222222001121112 is an abundant number, since it is smaller than the sum of its proper divisors (376962940926888).

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

222222001121112 is a wasteful number, since it uses less digits than its factorization.

222222001121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518241 (or 2518237 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222222001121112 its reverse (211121100222222), we get a palindrome (433343101343334).

The spelling of 222222001121112 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one million, one hundred twenty-one thousand, one hundred twelve".