212102000069 has 2 divisors, whose sum is σ = 212102000070. Its totient is φ = 212102000068.

The previous prime is 212102000009. The next prime is 212102000101. The reversal of 212102000069 is 960000201212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190389977569 + 21712022500 = 436337^2 + 147350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102000069 is a prime.

It is a super-2 number, since 2×212102000069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212102000009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051000034 + 106051000035.

It is an arithmetic number, because the mean of its divisors is an integer number (106051000035).

Almost surely, 2^212102000069 is an apocalyptic number.

It is an amenable number.

212102000069 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102000069 is an equidigital number, since it uses as much as digits as its factorization.

212102000069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 212102000069 in words is "two hundred twelve billion, one hundred two million, sixty-nine", and thus it is an aban number.