1022222212112 has 20 divisors (see below), whose sum is σ = 2026614968400. Its totient is φ = 499224800928.

The previous prime is 1022222212087. The next prime is 1022222212147. The reversal of 1022222212112 is 2112122222201.

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, 742893362 + ... + 742894737.

It is an arithmetic number, because the mean of its divisors is an integer number (101330748420).

Almost surely, 2^{1022222212112} is an apocalyptic number.

It is an amenable number.

1022222212112 is a deficient number, since it is larger than the sum of its proper divisors (1004392756288).

1022222212112 is a wasteful number, since it uses less digits than its factorization.

1022222212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485788150 (or 1485788144 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1022222212112 its reverse (2112122222201), we get a palindrome (3134344434313).

The spelling of 1022222212112 in words is "one trillion, twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twelve".