1111223456771 has 2 divisors, whose sum is σ = 1111223456772. Its totient is φ = 1111223456770.

The previous prime is 1111223456731. The next prime is 1111223456807. The reversal of 1111223456771 is 1776543221111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111223456771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111223456701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555611728385 + 555611728386.

It is an arithmetic number, because the mean of its divisors is an integer number (555611728386).

Almost surely, 2^{1111223456771} is an apocalyptic number.

1111223456771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111223456771 is an equidigital number, since it uses as much as digits as its factorization.

1111223456771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 41.

Adding to 1111223456771 its reverse (1776543221111), we get a palindrome (2887766677882).

The spelling of 1111223456771 in words is "one trillion, one hundred eleven billion, two hundred twenty-three million, four hundred fifty-six thousand, seven hundred seventy-one".