100920001 has 16 divisors (see below), whose sum is σ = 130748800. Its totient is φ = 75644928.

The previous prime is 100919957. The next prime is 100920013. The reversal of 100920001 is 100029001.

It is not a de Polignac number, because 100920001 - 2⁷ = 100919873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (100920301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27456 + ... + 30913.

It is an arithmetic number, because the mean of its divisors is an integer number (8171800).

Almost surely, 2^100920001 is an apocalyptic number.

It is an amenable number.

100920001 is a deficient number, since it is larger than the sum of its proper divisors (29828799).

100920001 is a wasteful number, since it uses less digits than its factorization.

100920001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58408.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 100920001 is about 10045.8947336711. The cubic root of 100920001 is about 465.5779624931.

Adding to 100920001 its reverse (100029001), we get a palindrome (200949002).

The spelling of 100920001 in words is "one hundred million, nine hundred twenty thousand, one".