111121311150 has 144 divisors (see below), whose sum is σ = 309116152800. Its totient is φ = 28585025280.

The previous prime is 111121311149. The next prime is 111121311151. The reversal of 111121311150 is 51113121111.

It is an interprime number because it is at equal distance from previous prime (111121311149) and next prime (111121311151).

It is a super-2 number, since 2×111121311150² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121311151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17836236 + ... + 17842464.

It is an arithmetic number, because the mean of its divisors is an integer number (2146639950).

Almost surely, 2^111121311150 is an apocalyptic number.

111121311150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111121311150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154558076400).

111121311150 is an abundant number, since it is smaller than the sum of its proper divisors (197994841650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111121311150 is a wasteful number, since it uses less digits than its factorization.

111121311150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7643 (or 7635 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 18.

Adding to 111121311150 its reverse (51113121111), we get a palindrome (162234432261).

The spelling of 111121311150 in words is "one hundred eleven billion, one hundred twenty-one million, three hundred eleven thousand, one hundred fifty".