21314411 has 2 divisors, whose sum is σ = 21314412. Its totient is φ = 21314410.

The previous prime is 21314401. The next prime is 21314417. The reversal of 21314411 is 11441312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21314411 - 2¹⁸ = 21052267 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21314411.

It is not a weakly prime, because it can be changed into another prime (21314417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657205 + 10657206.

It is an arithmetic number, because the mean of its divisors is an integer number (10657206).

Almost surely, 2^21314411 is an apocalyptic number.

21314411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21314411 is an equidigital number, since it uses as much as digits as its factorization.

21314411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 21314411 is about 4616.7532964195. The cubic root of 21314411 is about 277.2624854018.

Adding to 21314411 its reverse (11441312), we get a palindrome (32755723).

It can be divided in two parts, 21 and 314411, that added together give a cube (314432 = 68³).

The spelling of 21314411 in words is "twenty-one million, three hundred fourteen thousand, four hundred eleven".