20221963 has 2 divisors, whose sum is σ = 20221964. Its totient is φ = 20221962.

The previous prime is 20221937. The next prime is 20221969. The reversal of 20221963 is 36912202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20221963 - 2⁵ = 20221931 is a prime.

It is not a weakly prime, because it can be changed into another prime (20221969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110981 + 10110982.

It is an arithmetic number, because the mean of its divisors is an integer number (10110982).

Almost surely, 2^20221963 is an apocalyptic number.

20221963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221963 is an equidigital number, since it uses as much as digits as its factorization.

20221963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20221963 is about 4496.8836987407. The cubic root of 20221963 is about 272.4422367254.

The spelling of 20221963 in words is "twenty million, two hundred twenty-one thousand, nine hundred sixty-three".