1222110021100 has 36 divisors (see below), whose sum is σ = 2652937777504. Its totient is φ = 488667228480.

The previous prime is 1222110021059. The next prime is 1222110021101. The reversal of 1222110021100 is 11200112221.

It is not an unprimeable number, because it can be changed into a prime (1222110021101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1931667 + ... + 2485066.

Almost surely, 2^{1222110021100} is an apocalyptic number.

1222110021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222110021100 is an abundant number, since it is smaller than the sum of its proper divisors (1430827756404).

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

1222110021100 is a wasteful number, since it uses less digits than its factorization.

1222110021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419514 (or 4419507 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1222110021100 its reverse (11200112221), we get a palindrome (1233310133321).

The spelling of 1222110021100 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, twenty-one thousand, one hundred".