21223329983 has 2 divisors, whose sum is σ = 21223329984. Its totient is φ = 21223329982.

The previous prime is 21223329851. The next prime is 21223329991. The reversal of 21223329983 is 38992332212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21223329983 - 2²⁴ = 21206552767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223329583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611664991 + 10611664992.

It is an arithmetic number, because the mean of its divisors is an integer number (10611664992).

Almost surely, 2^21223329983 is an apocalyptic number.

21223329983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223329983 is an equidigital number, since it uses as much as digits as its factorization.

21223329983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The spelling of 21223329983 in words is "twenty-one billion, two hundred twenty-three million, three hundred twenty-nine thousand, nine hundred eighty-three".