1366111123 has 8 divisors (see below), whose sum is σ = 1491351008. Its totient is φ = 1243750464.

The previous prime is 1366111111. The next prime is 1366111129. The reversal of 1366111123 is 3211116631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1366111123 - 2²⁵ = 1332556691 is a prime.

It is a super-2 number, since 2×1366111123² = 3732519200768642258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366111129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718815 + ... + 720712.

It is an arithmetic number, because the mean of its divisors is an integer number (186418876).

Almost surely, 2^1366111123 is an apocalyptic number.

1366111123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1366111123 is a deficient number, since it is larger than the sum of its proper divisors (125239885).

1366111123 is a wasteful number, since it uses less digits than its factorization.

1366111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439613.

The product of its digits is 648, while the sum is 25.

The square root of 1366111123 is about 36960.9405048086. The cubic root of 1366111123 is about 1109.5886588287.

Adding to 1366111123 its reverse (3211116631), we get a palindrome (4577227754).

The spelling of 1366111123 in words is "one billion, three hundred sixty-six million, one hundred eleven thousand, one hundred twenty-three".