21054119 has 2 divisors, whose sum is σ = 21054120. Its totient is φ = 21054118.

The previous prime is 21054067. The next prime is 21054169. The reversal of 21054119 is 91145012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21054119 - 2²⁴ = 4276903 is a prime.

It is a super-2 number, since 2×21054119² = 886551853732322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21054094 and 21054103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21054169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10527059 + 10527060.

It is an arithmetic number, because the mean of its divisors is an integer number (10527060).

Almost surely, 2^21054119 is an apocalyptic number.

21054119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21054119 is an equidigital number, since it uses as much as digits as its factorization.

21054119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 21054119 is about 4588.4767624997. The cubic root of 21054119 is about 276.1292146835.

The spelling of 21054119 in words is "twenty-one million, fifty-four thousand, one hundred nineteen".