21114055 has 4 divisors (see below), whose sum is σ = 25336872. Its totient is φ = 16891240.

The previous prime is 21114047. The next prime is 21114077. The reversal of 21114055 is 55041112.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21114055 - 2³ = 21114047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111401 + ... + 2111410.

It is an arithmetic number, because the mean of its divisors is an integer number (6334218).

Almost surely, 2^21114055 is an apocalyptic number.

21114055 is a deficient number, since it is larger than the sum of its proper divisors (4222817).

21114055 is an equidigital number, since it uses as much as digits as its factorization.

21114055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222816.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 21114055 is about 4595.0032644167. The cubic root of 21114055 is about 276.3909908662.

Adding to 21114055 its reverse (55041112), we get a palindrome (76155167).

The spelling of 21114055 in words is "twenty-one million, one hundred fourteen thousand, fifty-five".