11031120255 has 16 divisors (see below), whose sum is σ = 17664159744. Its totient is φ = 5878475040.

The previous prime is 11031120251. The next prime is 11031120271. The reversal of 11031120255 is 55202113011.

It is not a de Polignac number, because 11031120255 - 2² = 11031120251 is a prime.

It is a super-2 number, since 2×11031120255² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031120251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280239 + ... + 317168.

It is an arithmetic number, because the mean of its divisors is an integer number (1104009984).

Almost surely, 2^11031120255 is an apocalyptic number.

11031120255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11031120255 is a deficient number, since it is larger than the sum of its proper divisors (6633039489).

11031120255 is a wasteful number, since it uses less digits than its factorization.

11031120255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598646.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 11031120255 its reverse (55202113011), we get a palindrome (66233233266).

The spelling of 11031120255 in words is "eleven billion, thirty-one million, one hundred twenty thousand, two hundred fifty-five".