1222111020100 has 36 divisors (see below), whose sum is σ = 2652068787984. Its totient is φ = 488828210080.

The previous prime is 1222111020071. The next prime is 1222111020149. The reversal of 1222111020100 is 10201112221.

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, 3098247 + ... + 3470353.

It is an arithmetic number, because the mean of its divisors is an integer number (73668577444).

Almost surely, 2^{1222111020100} is an apocalyptic number.

1222111020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222111020100 is an abundant number, since it is smaller than the sum of its proper divisors (1429957767884).

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

1222111020100 is a wasteful number, since it uses less digits than its factorization.

1222111020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404964 (or 404957 counting only the distinct ones).

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

Adding to 1222111020100 its reverse (10201112221), we get a palindrome (1232312132321).

The spelling of 1222111020100 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, twenty thousand, one hundred".