1226626120289 has 4 divisors (see below), whose sum is σ = 1226731142340. Its totient is φ = 1226521098240.

The previous prime is 1226626120273. The next prime is 1226626120411. The reversal of 1226626120289 is 9820216266221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 744955419664 + 481670700625 = 863108^2 + 694025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226626120289 - 2⁴ = 1226626120273 is a prime.

It is a super-2 number, since 2×1226626120289² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226626120219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52493504 + ... + 52516865.

It is an arithmetic number, because the mean of its divisors is an integer number (306682785585).

Almost surely, 2^{1226626120289} is an apocalyptic number.

It is an amenable number.

1226626120289 is a deficient number, since it is larger than the sum of its proper divisors (105022051).

1226626120289 is a wasteful number, since it uses less digits than its factorization.

1226626120289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105022050.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 1226626120289 in words is "one trillion, two hundred twenty-six billion, six hundred twenty-six million, one hundred twenty thousand, two hundred eighty-nine".