21100119 has 16 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 13466880.

The previous prime is 21100103. The next prime is 21100129. The reversal of 21100119 is 91100112.

It is not a de Polignac number, because 21100119 - 2⁴ = 21100103 is a prime.

It is a super-2 number, since 2×21100119² = 890430043628322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21100098 and 21100107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100129) 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, 7852 + ... + 10190.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^21100119 is an apocalyptic number.

21100119 is a deficient number, since it is larger than the sum of its proper divisors (8252841).

21100119 is a wasteful number, since it uses less digits than its factorization.

21100119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 21100119 is about 4593.4865842843. The cubic root of 21100119 is about 276.3301683068.

The spelling of 21100119 in words is "twenty-one million, one hundred thousand, one hundred nineteen".