222121123112 has 32 divisors (see below), whose sum is σ = 476742849600. Its totient is φ = 95040964224.

The previous prime is 222121123099. The next prime is 222121123153. The reversal of 222121123112 is 211321121222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3169253 + ... + 3238580.

It is an arithmetic number, because the mean of its divisors is an integer number (14898214050).

Almost surely, 2^222121123112 is an apocalyptic number.

It is an amenable number.

222121123112 is an abundant number, since it is smaller than the sum of its proper divisors (254621726488).

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

222121123112 is a wasteful number, since it uses less digits than its factorization.

222121123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408465 (or 6408461 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 222121123112 its reverse (211321121222), we get a palindrome (433442244334).

The spelling of 222121123112 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred twelve".