212726655601 has 2 divisors, whose sum is σ = 212726655602. Its totient is φ = 212726655600.

The previous prime is 212726655551. The next prime is 212726655623. The reversal of 212726655601 is 106556627212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148452237025 + 64274418576 = 385295^2 + 253524^2 .

It is a cyclic number.

It is not a de Polignac number, because 212726655601 - 2²⁵ = 212693101169 is a prime.

It is not a weakly prime, because it can be changed into another prime (212726656601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106363327800 + 106363327801.

It is an arithmetic number, because the mean of its divisors is an integer number (106363327801).

Almost surely, 2^212726655601 is an apocalyptic number.

It is an amenable number.

212726655601 is a deficient number, since it is larger than the sum of its proper divisors (1).

212726655601 is an equidigital number, since it uses as much as digits as its factorization.

212726655601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 212726655601 in words is "two hundred twelve billion, seven hundred twenty-six million, six hundred fifty-five thousand, six hundred one".