100265121 has 40 divisors (see below), whose sum is σ = 167258784. Its totient is φ = 59330880.

The previous prime is 100265111. The next prime is 100265149. The reversal of 100265121 is 121562001.

100265121 is a `hidden beast` number, since 10 + 0 + 2 + 651 + 2 + 1 = 666.

It is not a de Polignac number, because 100265121 - 2⁵ = 100265089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100265094 and 100265103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100265101) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37005 + ... + 39621.

Almost surely, 2^100265121 is an apocalyptic number.

100265121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100265121 is a deficient number, since it is larger than the sum of its proper divisors (66993663).

100265121 is a wasteful number, since it uses less digits than its factorization.

100265121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 100265121 is about 10013.2472754846. The cubic root of 100265121 is about 464.5687156150.

The spelling of 100265121 in words is "one hundred million, two hundred sixty-five thousand, one hundred twenty-one".