111215136340 has 240 divisors, whose sum is σ = 298626217344. Its totient is φ = 34501958400.

The previous prime is 111215136289. The next prime is 111215136343. The reversal of 111215136340 is 43631512111.

It is a super-2 number, since 2×111215136340² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 111215136299 and 111215136308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111215136343) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 164276082 + ... + 164276758.

Almost surely, 2^111215136340 is an apocalyptic number.

111215136340 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 111215136340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149313108672).

111215136340 is an abundant number, since it is smaller than the sum of its proper divisors (187411081004).

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

111215136340 is a wasteful number, since it uses less digits than its factorization.

111215136340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 111215136340 its reverse (43631512111), we get a palindrome (154846648451).

The spelling of 111215136340 in words is "one hundred eleven billion, two hundred fifteen million, one hundred thirty-six thousand, three hundred forty".