111123011121331 has 4 divisors (see below), whose sum is σ = 121225103041464. Its totient is φ = 101020919201200.

The previous prime is 111123011121313. The next prime is 111123011121379. The reversal of 111123011121331 is 133121110321111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111123011121331 is a prime.

It is a super-2 number, since 2×111123011121331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123011121431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5051045960050 + ... + 5051045960071.

It is an arithmetic number, because the mean of its divisors is an integer number (30306275760366).

Almost surely, 2^{111123011121331} is an apocalyptic number.

111123011121331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111123011121331 is a deficient number, since it is larger than the sum of its proper divisors (10102091920133).

111123011121331 is a wasteful number, since it uses less digits than its factorization.

111123011121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102091920132.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 111123011121331 its reverse (133121110321111), we get a palindrome (244244121442442).

The spelling of 111123011121331 in words is "one hundred eleven trillion, one hundred twenty-three billion, eleven million, one hundred twenty-one thousand, three hundred thirty-one".