1222021100212 has 24 divisors (see below), whose sum is σ = 2413395905760. Its totient is φ = 536310200160.

The previous prime is 1222021100207. The next prime is 1222021100327. The reversal of 1222021100212 is 2120011202221.

It is a happy number.

It is a congruent number.

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, 478847118 + ... + 478849669.

It is an arithmetic number, because the mean of its divisors is an integer number (100558162740).

Almost surely, 2^{1222021100212} is an apocalyptic number.

It is an amenable number.

1222021100212 is a deficient number, since it is larger than the sum of its proper divisors (1191374805548).

1222021100212 is a wasteful number, since it uses less digits than its factorization.

1222021100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957696831 (or 957696829 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222021100212 its reverse (2120011202221), we get a palindrome (3342032302433).

The spelling of 1222021100212 in words is "one trillion, two hundred twenty-two billion, twenty-one million, one hundred thousand, two hundred twelve".