10021211069 has 2 divisors, whose sum is σ = 10021211070. Its totient is φ = 10021211068.

The previous prime is 10021211003. The next prime is 10021211071. The reversal of 10021211069 is 96011212001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8618708569 + 1402502500 = 92837^2 + 37450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021211069 is a prime.

It is a super-2 number, since 2×10021211069² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 10021211071, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021211099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010605534 + 5010605535.

It is an arithmetic number, because the mean of its divisors is an integer number (5010605535).

Almost surely, 2^10021211069 is an apocalyptic number.

It is an amenable number.

10021211069 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021211069 is an equidigital number, since it uses as much as digits as its factorization.

10021211069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 10021211069 in words is "ten billion, twenty-one million, two hundred eleven thousand, sixty-nine".