1002221220100 has 36 divisors (see below), whose sum is σ = 2174969713168. Its totient is φ = 400860900000.

The previous prime is 1002221220083. The next prime is 1002221220127. The reversal of 1002221220100 is 10221222001.

It is a happy number.

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, 1147675 + ... + 1822525.

Almost surely, 2^{1002221220100} is an apocalyptic number.

1002221220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002221220100 is an abundant number, since it is smaller than the sum of its proper divisors (1172748493068).

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

1002221220100 is a wasteful number, since it uses less digits than its factorization.

1002221220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689716 (or 689709 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1002221220100 its reverse (10221222001), we get a palindrome (1012442442101).

The spelling of 1002221220100 in words is "one trillion, two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred".