111421531260 has 288 divisors, whose sum is σ = 381369922752. Its totient is φ = 27142594560.

The previous prime is 111421531241. The next prime is 111421531289. The reversal of 111421531260 is 62135124111.

111421531260 is a `hidden beast` number, since 111 + 421 + 5 + 3 + 126 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6119370 + ... + 6137550.

Almost surely, 2^111421531260 is an apocalyptic number.

111421531260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111421531260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190684961376).

111421531260 is an abundant number, since it is smaller than the sum of its proper divisors (269948391492).

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

111421531260 is a wasteful number, since it uses less digits than its factorization.

111421531260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18315 (or 18301 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 111421531260 its reverse (62135124111), we get a palindrome (173556655371).

The spelling of 111421531260 in words is "one hundred eleven billion, four hundred twenty-one million, five hundred thirty-one thousand, two hundred sixty".