100837021 has 4 divisors (see below), whose sum is σ = 103182112. Its totient is φ = 98491932.

The previous prime is 100837001. The next prime is 100837027. The reversal of 100837021 is 120738001.

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: 120738001 = 337 ⋅358273.

It is a cyclic number.

It is not a de Polignac number, because 100837021 - 2¹³ = 100828829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100836983 and 100837001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100837027) 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, 1172481 + ... + 1172566.

It is an arithmetic number, because the mean of its divisors is an integer number (25795528).

Almost surely, 2^100837021 is an apocalyptic number.

It is an amenable number.

100837021 is a deficient number, since it is larger than the sum of its proper divisors (2345091).

100837021 is an equidigital number, since it uses as much as digits as its factorization.

100837021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345090.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 100837021 is about 10041.7638390872. The cubic root of 100837021 is about 465.4503226053.

The spelling of 100837021 in words is "one hundred million, eight hundred thirty-seven thousand, twenty-one".