1222211102100 has 36 divisors (see below), whose sum is σ = 3536264122944. Its totient is φ = 325922960480.

The previous prime is 1222211102083. The next prime is 1222211102113. The reversal of 1222211102100 is 12011122221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1222211102100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2037018204 + ... + 2037018803.

Almost surely, 2^{1222211102100} is an apocalyptic number.

1222211102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222211102100 is an abundant number, since it is smaller than the sum of its proper divisors (2314053020844).

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

1222211102100 is a wasteful number, since it uses less digits than its factorization.

1222211102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074037024 (or 4074037017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1222211102100 its reverse (12011122221), we get a palindrome (1234222224321).

The spelling of 1222211102100 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, one hundred two thousand, one hundred".