1223915048911 has 2 divisors, whose sum is σ = 1223915048912. Its totient is φ = 1223915048910.

The previous prime is 1223915048903. The next prime is 1223915048953. The reversal of 1223915048911 is 1198405193221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223915048911 - 2³ = 1223915048903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223915048711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611957524455 + 611957524456.

It is an arithmetic number, because the mean of its divisors is an integer number (611957524456).

Almost surely, 2^{1223915048911} is an apocalyptic number.

1223915048911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223915048911 is an equidigital number, since it uses as much as digits as its factorization.

1223915048911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 1223915048911 in words is "one trillion, two hundred twenty-three billion, nine hundred fifteen million, forty-eight thousand, nine hundred eleven".