10211209969 has 2 divisors, whose sum is σ = 10211209970. Its totient is φ = 10211209968.

The previous prime is 10211209961. The next prime is 10211209991. The reversal of 10211209969 is 96990211201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5724889569 + 4486320400 = 75663^2 + 66980^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211209969 - 2³ = 10211209961 is a prime.

It is a super-2 number, since 2×10211209969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10211209961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105604984 + 5105604985.

It is an arithmetic number, because the mean of its divisors is an integer number (5105604985).

Almost surely, 2^10211209969 is an apocalyptic number.

It is an amenable number.

10211209969 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211209969 is an equidigital number, since it uses as much as digits as its factorization.

10211209969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 10211209969 in words is "ten billion, two hundred eleven million, two hundred nine thousand, nine hundred sixty-nine".