100021419 has 16 divisors (see below), whose sum is σ = 150394240. Its totient is φ = 65684520.

The previous prime is 100021409. The next prime is 100021429. The reversal of 100021419 is 914120001.

It is an interprime number because it is at equal distance from previous prime (100021409) and next prime (100021429).

It is not a de Polignac number, because 100021419 - 2¹⁹ = 99497131 is a prime.

It is a super-2 number, since 2×100021419² = 20008568517547122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100021409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25837 + ... + 29454.

It is an arithmetic number, because the mean of its divisors is an integer number (9399640).

Almost surely, 2^100021419 is an apocalyptic number.

100021419 is a deficient number, since it is larger than the sum of its proper divisors (50372821).

100021419 is an equidigital number, since it uses as much as digits as its factorization.

100021419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55367 (or 55361 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 100021419 is about 10001.0708926594. The cubic root of 100021419 is about 464.1920203926.

The spelling of 100021419 in words is "one hundred million, twenty-one thousand, four hundred nineteen".