1223334445681 has 2 divisors, whose sum is σ = 1223334445682. Its totient is φ = 1223334445680.

The previous prime is 1223334445661. The next prime is 1223334445727. The reversal of 1223334445681 is 1865444333221.

It is an a-pointer prime, because the next prime (1223334445727) can be obtained adding 1223334445681 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216258271281 + 7076174400 = 1102841^2 + 84120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223334445681 - 2¹⁵ = 1223334412913 is a prime.

It is a super-3 number, since 3×1223334445681³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1223334445651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611667222840 + 611667222841.

It is an arithmetic number, because the mean of its divisors is an integer number (611667222841).

Almost surely, 2^{1223334445681} is an apocalyptic number.

It is an amenable number.

1223334445681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223334445681 is an equidigital number, since it uses as much as digits as its factorization.

1223334445681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 46.

The spelling of 1223334445681 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-four million, four hundred forty-five thousand, six hundred eighty-one".