1226782122901 has 2 divisors, whose sum is σ = 1226782122902. Its totient is φ = 1226782122900.

The previous prime is 1226782122899. The next prime is 1226782122911. The reversal of 1226782122901 is 1092212876221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736258383025 + 490523739876 = 858055^2 + 700374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226782122901 - 2¹ = 1226782122899 is a prime.

Together with 1226782122899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226782122911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613391061450 + 613391061451.

It is an arithmetic number, because the mean of its divisors is an integer number (613391061451).

Almost surely, 2^{1226782122901} is an apocalyptic number.

It is an amenable number.

1226782122901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226782122901 is an equidigital number, since it uses as much as digits as its factorization.

1226782122901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 1226782122901 in words is "one trillion, two hundred twenty-six billion, seven hundred eighty-two million, one hundred twenty-two thousand, nine hundred one".