1222210212100 has 36 divisors (see below), whose sum is σ = 2652250373584. Its totient is φ = 488874091680.

The previous prime is 1222210212077. The next prime is 1222210212127. The reversal of 1222210212100 is 12120122221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6584767 + ... + 6767833.

Almost surely, 2^{1222210212100} is an apocalyptic number.

1222210212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222210212100 is an abundant number, since it is smaller than the sum of its proper divisors (1430040161484).

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

1222210212100 is a wasteful number, since it uses less digits than its factorization.

1222210212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249844 (or 249837 counting only the distinct ones).

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

Adding to 1222210212100 its reverse (12120122221), we get a palindrome (1234330334321).

The spelling of 1222210212100 in words is "one trillion, two hundred twenty-two billion, two hundred ten million, two hundred twelve thousand, one hundred".