212202671669 has 2 divisors, whose sum is σ = 212202671670. Its totient is φ = 212202671668.

The previous prime is 212202671627. The next prime is 212202671671. The reversal of 212202671669 is 966176202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199639176100 + 12563495569 = 446810^2 + 112087^2 .

It is a cyclic number.

It is not a de Polignac number, because 212202671669 - 2²⁰ = 212201623093 is a prime.

It is a super-2 number, since 2×212202671669² (a number of 23 digits) contains 22 as substring.

Together with 212202671671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212202671699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101335834 + 106101335835.

It is an arithmetic number, because the mean of its divisors is an integer number (106101335835).

Almost surely, 2^212202671669 is an apocalyptic number.

It is an amenable number.

212202671669 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202671669 is an equidigital number, since it uses as much as digits as its factorization.

212202671669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 212202671669 in words is "two hundred twelve billion, two hundred two million, six hundred seventy-one thousand, six hundred sixty-nine".