21122122963 has 2 divisors, whose sum is σ = 21122122964. Its totient is φ = 21122122962.

The previous prime is 21122122951. The next prime is 21122122981. The reversal of 21122122963 is 36922122112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21122122963 - 2⁹ = 21122122451 is a prime.

It is a super-2 number, since 2×21122122963² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21122222963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561061481 + 10561061482.

It is an arithmetic number, because the mean of its divisors is an integer number (10561061482).

Almost surely, 2^21122122963 is an apocalyptic number.

21122122963 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122122963 is an equidigital number, since it uses as much as digits as its factorization.

21122122963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The spelling of 21122122963 in words is "twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, nine hundred sixty-three".