22222021212112 has 20 divisors (see below), whose sum is σ = 43057969827840. Its totient is φ = 11110287063008.

The previous prime is 22222021212091. The next prime is 22222021212121. The reversal of 22222021212112 is 21121212022222.

It is a congruent 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, 44968018 + ... + 45459505.

It is an arithmetic number, because the mean of its divisors is an integer number (2152898491392).

Almost surely, 2^{22222021212112} is an apocalyptic number.

It is an amenable number.

22222021212112 is a deficient number, since it is larger than the sum of its proper divisors (20835948615728).

22222021212112 is a wasteful number, since it uses less digits than its factorization.

22222021212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90442890 (or 90442884 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22222021212112 its reverse (21121212022222), we get a palindrome (43343233234334).

The spelling of 22222021212112 in words is "twenty-two trillion, two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred twelve".