6230021921 has 2 divisors, whose sum is σ = 6230021922. Its totient is φ = 6230021920.

The previous prime is 6230021801. The next prime is 6230021951. The reversal of 6230021921 is 1291200326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3996136225 + 2233885696 = 63215^2 + 47264^2 .

It is a cyclic number.

It is not a de Polignac number, because 6230021921 - 2¹⁸ = 6229759777 is a prime.

It is a super-2 number, since 2×6230021921² = 77626346272281060482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6230021951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3115010960 + 3115010961.

It is an arithmetic number, because the mean of its divisors is an integer number (3115010961).

Almost surely, 2^6230021921 is an apocalyptic number.

It is an amenable number.

6230021921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6230021921 is an equidigital number, since it uses as much as digits as its factorization.

6230021921 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 26.

The square root of 6230021921 is about 78930.4879054982. The cubic root of 6230021921 is about 1840.0509911239.

The spelling of 6230021921 in words is "six billion, two hundred thirty million, twenty-one thousand, nine hundred twenty-one".