1223534554111 has 2 divisors, whose sum is σ = 1223534554112. Its totient is φ = 1223534554110.

The previous prime is 1223534554031. The next prime is 1223534554129. The reversal of 1223534554111 is 1114554353221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223534554111 - 2⁹ = 1223534553599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223534554181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611767277055 + 611767277056.

It is an arithmetic number, because the mean of its divisors is an integer number (611767277056).

Almost surely, 2^{1223534554111} is an apocalyptic number.

1223534554111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223534554111 is an equidigital number, since it uses as much as digits as its factorization.

1223534554111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 37.

The spelling of 1223534554111 in words is "one trillion, two hundred twenty-three billion, five hundred thirty-four million, five hundred fifty-four thousand, one hundred eleven".