11311222355 has 4 divisors (see below), whose sum is σ = 13573466832. Its totient is φ = 9048977880.

The previous prime is 11311222343. The next prime is 11311222547. The reversal of 11311222355 is 55322211311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55322211311 = 29 ⋅1907662459.

It is not a de Polignac number, because 11311222355 - 2⁴ = 11311222339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131122231 + ... + 1131122240.

It is an arithmetic number, because the mean of its divisors is an integer number (3393366708).

Almost surely, 2^11311222355 is an apocalyptic number.

11311222355 is a deficient number, since it is larger than the sum of its proper divisors (2262244477).

11311222355 is an equidigital number, since it uses as much as digits as its factorization.

11311222355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262244476.

The product of its digits is 1800, while the sum is 26.

Adding to 11311222355 its reverse (55322211311), we get a palindrome (66633433666).

The spelling of 11311222355 in words is "eleven billion, three hundred eleven million, two hundred twenty-two thousand, three hundred fifty-five".