21010301969 has 2 divisors, whose sum is σ = 21010301970. Its totient is φ = 21010301968.

The previous prime is 21010301933. The next prime is 21010302059. The reversal of 21010301969 is 96910301012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15298721344 + 5711580625 = 123688^2 + 75575^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010301969 - 2³² = 16715334673 is a prime.

It is a super-2 number, since 2×21010301969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21010301929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505150984 + 10505150985.

It is an arithmetic number, because the mean of its divisors is an integer number (10505150985).

Almost surely, 2^21010301969 is an apocalyptic number.

It is an amenable number.

21010301969 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010301969 is an equidigital number, since it uses as much as digits as its factorization.

21010301969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 21010301969 in words is "twenty-one billion, ten million, three hundred one thousand, nine hundred sixty-nine".