21335107 has 2 divisors, whose sum is σ = 21335108. Its totient is φ = 21335106.

The previous prime is 21335101. The next prime is 21335113. The reversal of 21335107 is 70153312.

It is a balanced prime because it is at equal distance from previous prime (21335101) and next prime (21335113).

It is a cyclic number.

It is not a de Polignac number, because 21335107 - 2⁷ = 21334979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21335101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667553 + 10667554.

It is an arithmetic number, because the mean of its divisors is an integer number (10667554).

Almost surely, 2^21335107 is an apocalyptic number.

21335107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21335107 is an equidigital number, since it uses as much as digits as its factorization.

21335107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 21335107 is about 4618.9941545752. The cubic root of 21335107 is about 277.3521957259.

Adding to 21335107 its reverse (70153312), we get a palindrome (91488419).

The spelling of 21335107 in words is "twenty-one million, three hundred thirty-five thousand, one hundred seven".