21160963 has 2 divisors, whose sum is σ = 21160964. Its totient is φ = 21160962.

The previous prime is 21160957. The next prime is 21160969. The reversal of 21160963 is 36906112.

It is a balanced prime because it is at equal distance from previous prime (21160957) and next prime (21160969).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21160963 is a prime.

It is not a weakly prime, because it can be changed into another prime (21160969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10580481 + 10580482.

It is an arithmetic number, because the mean of its divisors is an integer number (10580482).

Almost surely, 2^21160963 is an apocalyptic number.

21160963 is a deficient number, since it is larger than the sum of its proper divisors (1).

21160963 is an equidigital number, since it uses as much as digits as its factorization.

21160963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 21160963 is about 4600.1046727221. The cubic root of 21160963 is about 276.5955206490.

The spelling of 21160963 in words is "twenty-one million, one hundred sixty thousand, nine hundred sixty-three".