900901000100 has 36 divisors (see below), whose sum is σ = 2039953226304. Its totient is φ = 344692555680.

The previous prime is 900901000091. The next prime is 900901000121. The reversal of 900901000100 is 1000109009.

It is a super-2 number, since 2×900901000100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 195845744 + ... + 195850343.

Almost surely, 2^900901000100 is an apocalyptic number.

It is an amenable number.

900901000100 is an abundant number, since it is smaller than the sum of its proper divisors (1139052226204).

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

900901000100 is a wasteful number, since it uses less digits than its factorization.

900901000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391696124 (or 391696117 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 20.

Adding to 900901000100 its reverse (1000109009), we get a palindrome (901901109109).

The spelling of 900901000100 in words is "nine hundred billion, nine hundred one million, one hundred", and thus it is an aban number.