100261021 has 8 divisors (see below), whose sum is σ = 114674240. Its totient is φ = 85870368.

The previous prime is 100260973. The next prime is 100261111. The reversal of 100261021 is 120162001.

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 100261021 - 2¹¹ = 100258973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100260992 and 100261010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100262021) 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, 5305 + ... + 15121.

It is an arithmetic number, because the mean of its divisors is an integer number (14334280).

Almost surely, 2^100261021 is an apocalyptic number.

It is an amenable number.

100261021 is a deficient number, since it is larger than the sum of its proper divisors (14413219).

100261021 is an equidigital number, since it uses as much as digits as its factorization.

100261021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11283.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 100261021 is about 10013.0425446015. The cubic root of 100261021 is about 464.5623832112.

It can be divided in two parts, 100 and 261021, that added together give a square (261121 = 511²).

The spelling of 100261021 in words is "one hundred million, two hundred sixty-one thousand, twenty-one".