21114607 has 2 divisors, whose sum is σ = 21114608. Its totient is φ = 21114606.

The previous prime is 21114589. The next prime is 21114623. The reversal of 21114607 is 70641112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21114607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557303 + 10557304.

It is an arithmetic number, because the mean of its divisors is an integer number (10557304).

Almost surely, 2^21114607 is an apocalyptic number.

21114607 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114607 is an equidigital number, since it uses as much as digits as its factorization.

21114607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 21114607 is about 4595.0633292698. The cubic root of 21114607 is about 276.3933994750.

Adding to 21114607 its reverse (70641112), we get a palindrome (91755719).

The spelling of 21114607 in words is "twenty-one million, one hundred fourteen thousand, six hundred seven".