1222211000100 has 144 divisors (see below), whose sum is σ = 3817256929920. Its totient is φ = 301002240000.

The previous prime is 1222211000051. The next prime is 1222211000107. The reversal of 1222211000100 is 10001122221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1222211000107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2853901 + ... + 3254100.

It is an arithmetic number, because the mean of its divisors is an integer number (26508728680).

Almost surely, 2^{1222211000100} is an apocalyptic number.

1222211000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222211000100 is an abundant number, since it is smaller than the sum of its proper divisors (2595045929820).

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

1222211000100 is a wasteful number, since it uses less digits than its factorization.

1222211000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108070 (or 6108063 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1222211000100 its reverse (10001122221), we get a palindrome (1232212122321).

The spelling of 1222211000100 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, one hundred", and thus it is an aban number.