1222202021112 has 48 divisors (see below), whose sum is σ = 3504844034640. Its totient is φ = 383435927808.

The previous prime is 1222202021077. The next prime is 1222202021123. The reversal of 1222202021112 is 2111202022221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499264308 + ... + 499266755.

It is an arithmetic number, because the mean of its divisors is an integer number (73017584055).

Almost surely, 2^{1222202021112} is an apocalyptic number.

1222202021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222202021112 is an abundant number, since it is smaller than the sum of its proper divisors (2282642013528).

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

1222202021112 is a wasteful number, since it uses less digits than its factorization.

1222202021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998531092 (or 998531085 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222202021112 its reverse (2111202022221), we get a palindrome (3333404043333).

The spelling of 1222202021112 in words is "one trillion, two hundred twenty-two billion, two hundred two million, twenty-one thousand, one hundred twelve".