1223650261013 has 2 divisors, whose sum is σ = 1223650261014. Its totient is φ = 1223650261012.

The previous prime is 1223650260967. The next prime is 1223650261027. The reversal of 1223650261013 is 3101620563221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1179172294609 + 44477966404 = 1085897^2 + 210898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223650261013 - 2⁶ = 1223650260949 is a prime.

It is a super-2 number, since 2×1223650261013² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223650261073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611825130506 + 611825130507.

It is an arithmetic number, because the mean of its divisors is an integer number (611825130507).

Almost surely, 2^{1223650261013} is an apocalyptic number.

It is an amenable number.

1223650261013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223650261013 is an equidigital number, since it uses as much as digits as its factorization.

1223650261013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 1223650261013 in words is "one trillion, two hundred twenty-three billion, six hundred fifty million, two hundred sixty-one thousand, thirteen".