100133021 has 8 divisors (see below), whose sum is σ = 105880320. Its totient is φ = 94433472.

The previous prime is 100132999. The next prime is 100133081. The reversal of 100133021 is 120331001.

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 100133021 - 2¹⁸ = 99870877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100132993 and 100133011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100133081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7580 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (13235040).

Almost surely, 2^100133021 is an apocalyptic number.

It is an amenable number.

100133021 is a deficient number, since it is larger than the sum of its proper divisors (5747299).

100133021 is a wasteful number, since it uses less digits than its factorization.

100133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23875.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 100133021 is about 10006.6488396466. The cubic root of 100133021 is about 464.3646017681.

Adding to 100133021 its reverse (120331001), we get a palindrome (220464022).

The spelling of 100133021 in words is "one hundred million, one hundred thirty-three thousand, twenty-one".