21114207 has 12 divisors (see below), whose sum is σ = 31824624. Its totient is φ = 13464000.

The previous prime is 21114173. The next prime is 21114209. The reversal of 21114207 is 70241112.

It is not a de Polignac number, because 21114207 - 2⁶ = 21114143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21114207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50794 + ... + 51207.

It is an arithmetic number, because the mean of its divisors is an integer number (2652052).

Almost surely, 2^21114207 is an apocalyptic number.

21114207 is a deficient number, since it is larger than the sum of its proper divisors (10710417).

21114207 is a wasteful number, since it uses less digits than its factorization.

21114207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102030 (or 102027 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 21114207 is about 4595.0198040923. The cubic root of 21114207 is about 276.3916541105.

Adding to 21114207 its reverse (70241112), we get a palindrome (91355319).

It can be divided in two parts, 21114 and 207, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 21114207 in words is "twenty-one million, one hundred fourteen thousand, two hundred seven".