100601921 has 8 divisors (see below), whose sum is σ = 115242624. Its totient is φ = 86028480.

The previous prime is 100601911. The next prime is 100601923. The reversal of 100601921 is 129106001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100601921 - 2²² = 96407617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100601893 and 100601902.

It is not an unprimeable number, because it can be changed into a prime (100601923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13565 + ... + 19626.

It is an arithmetic number, because the mean of its divisors is an integer number (14405328).

Almost surely, 2^100601921 is an apocalyptic number.

It is an amenable number.

100601921 is a deficient number, since it is larger than the sum of its proper divisors (14640703).

100601921 is an equidigital number, since it uses as much as digits as its factorization.

100601921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33631.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 100601921 is about 10030.0508971789. The cubic root of 100601921 is about 465.0883109723.

Adding to 100601921 its reverse (129106001), we get a palindrome (229707922).

The spelling of 100601921 in words is "one hundred million, six hundred one thousand, nine hundred twenty-one".