222121112120012 has 12 divisors (see below), whose sum is σ = 444242224240080. Its totient is φ = 95194762337136.

The previous prime is 222121112119969. The next prime is 222121112120027. The reversal of 222121112120012 is 210021211121222.

222121112120012 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3966448430687 + ... + 3966448430742.

It is an arithmetic number, because the mean of its divisors is an integer number (37020185353340).

Almost surely, 2^{222121112120012} is an apocalyptic number.

It is an amenable number.

222121112120012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

222121112120012 is a wasteful number, since it uses less digits than its factorization.

222121112120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932896861440 (or 7932896861438 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222121112120012 its reverse (210021211121222), we get a palindrome (432142323241234).

The spelling of 222121112120012 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty thousand, twelve".