100201232009 has 4 divisors (see below), whose sum is σ = 100202527440. Its totient is φ = 100199936580.

The previous prime is 100201231981. The next prime is 100201232077. The reversal of 100201232009 is 900232102001.

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: 900232102001 = 58231 ⋅15459671.

It is a cyclic number.

It is not a de Polignac number, because 100201232009 - 2²⁴ = 100184454793 is a prime.

It is a super-2 number, since 2×100201232009² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100201234009) 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, 523787 + ... + 689024.

It is an arithmetic number, because the mean of its divisors is an integer number (25050631860).

Almost surely, 2^100201232009 is an apocalyptic number.

It is an amenable number.

100201232009 is a deficient number, since it is larger than the sum of its proper divisors (1295431).

100201232009 is an equidigital number, since it uses as much as digits as its factorization.

100201232009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295430.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 100201232009 in words is "one hundred billion, two hundred one million, two hundred thirty-two thousand, nine".