5551111103111 has 32 divisors (see below), whose sum is σ = 6968972451840. Its totient is φ = 4311315401184.

The previous prime is 5551111103101. The next prime is 5551111103189. The reversal of 5551111103111 is 1113011111555.

It is a cyclic number.

It is not a de Polignac number, because 5551111103111 - 2¹⁰ = 5551111102087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551111103101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38970926 + ... + 39113108.

It is an arithmetic number, because the mean of its divisors is an integer number (217780389120).

Almost surely, 2^{5551111103111} is an apocalyptic number.

5551111103111 is a deficient number, since it is larger than the sum of its proper divisors (1417861348729).

5551111103111 is a wasteful number, since it uses less digits than its factorization.

5551111103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154995.

The product of its (nonzero) digits is 375, while the sum is 26.

Adding to 5551111103111 its reverse (1113011111555), we get a palindrome (6664122214666).

The spelling of 5551111103111 in words is "five trillion, five hundred fifty-one billion, one hundred eleven million, one hundred three thousand, one hundred eleven".