212721567922559 has 2 divisors, whose sum is σ = 212721567922560. Its totient is φ = 212721567922558.

The previous prime is 212721567922481. The next prime is 212721567922573. The reversal of 212721567922559 is 955229765127212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212721567922559 is a prime.

It is a super-2 number, since 2×212721567922559² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212721567922495 and 212721567922504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212721567922579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106360783961279 + 106360783961280.

It is an arithmetic number, because the mean of its divisors is an integer number (106360783961280).

Almost surely, 2^{212721567922559} is an apocalyptic number.

212721567922559 is a deficient number, since it is larger than the sum of its proper divisors (1).

212721567922559 is an equidigital number, since it uses as much as digits as its factorization.

212721567922559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256000, while the sum is 65.

The spelling of 212721567922559 in words is "two hundred twelve trillion, seven hundred twenty-one billion, five hundred sixty-seven million, nine hundred twenty-two thousand, five hundred fifty-nine".