11230120055 has 32 divisors (see below), whose sum is σ = 17038107648. Its totient is φ = 6901977600.

The previous prime is 11230120043. The next prime is 11230120061. The reversal of 11230120055 is 55002103211.

It is a happy number.

It is not a de Polignac number, because 11230120055 - 2¹² = 11230115959 is a prime.

It is a super-2 number, since 2×11230120055² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178082 + ... + 232751.

It is an arithmetic number, because the mean of its divisors is an integer number (532440864).

Almost surely, 2^11230120055 is an apocalyptic number.

11230120055 is a deficient number, since it is larger than the sum of its proper divisors (5807987593).

11230120055 is a wasteful number, since it uses less digits than its factorization.

11230120055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410927.

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 11230120055 its reverse (55002103211), we get a palindrome (66232223266).

The spelling of 11230120055 in words is "eleven billion, two hundred thirty million, one hundred twenty thousand, fifty-five".