212265087077 has 2 divisors, whose sum is σ = 212265087078. Its totient is φ = 212265087076.

The previous prime is 212265087059. The next prime is 212265087107. The reversal of 212265087077 is 770780562212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193242884836 + 19022202241 = 439594^2 + 137921^2 .

It is a cyclic number.

It is not a de Polignac number, because 212265087077 - 2¹⁰ = 212265086053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212265087577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106132543538 + 106132543539.

It is an arithmetic number, because the mean of its divisors is an integer number (106132543539).

Almost surely, 2^212265087077 is an apocalyptic number.

It is an amenable number.

212265087077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212265087077 is an equidigital number, since it uses as much as digits as its factorization.

212265087077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 658560, while the sum is 47.

The spelling of 212265087077 in words is "two hundred twelve billion, two hundred sixty-five million, eighty-seven thousand, seventy-seven".