100200099981 has 4 divisors (see below), whose sum is σ = 133600133312. Its totient is φ = 66800066652.

The previous prime is 100200099931. The next prime is 100200099983. The reversal of 100200099981 is 189990002001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189990002001 = 3 ⋅63330000667.

It is not a de Polignac number, because 100200099981 - 2¹⁵ = 100200067213 is a prime.

It is a super-2 number, since 2×100200099981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100200099983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16700016661 + ... + 16700016666.

It is an arithmetic number, because the mean of its divisors is an integer number (33400033328).

Almost surely, 2^100200099981 is an apocalyptic number.

It is an amenable number.

100200099981 is a deficient number, since it is larger than the sum of its proper divisors (33400033331).

100200099981 is an equidigital number, since it uses as much as digits as its factorization.

100200099981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33400033330.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 100200099981 in words is "one hundred billion, two hundred million, ninety-nine thousand, nine hundred eighty-one".