221222211120100 has 36 divisors (see below), whose sum is σ = 480083150642368. Its totient is φ = 88483178916000.

The previous prime is 221222211120067. The next prime is 221222211120107. The reversal of 221222211120100 is 1021112222122.

It is not an unprimeable number, because it can be changed into a prime (221222211120107) 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, 69760296 + ... + 72862495.

Almost surely, 2^{221222211120100} is an apocalyptic number.

221222211120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222211120100 is an abundant number, since it is smaller than the sum of its proper divisors (258860939522268).

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

221222211120100 is a wasteful number, since it uses less digits than its factorization.

221222211120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142638316 (or 142638309 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221222211120100 its reverse (1021112222122), we get a palindrome (222243323342222).

The spelling of 221222211120100 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred eleven million, one hundred twenty thousand, one hundred".