111215026345 has 16 divisors (see below), whose sum is σ = 137785950720. Its totient is φ = 86087692800.

The previous prime is 111215026343. The next prime is 111215026369. The reversal of 111215026345 is 543620512111.

It is not a de Polignac number, because 111215026345 - 2¹ = 111215026343 is a prime.

It is a super-3 number, since 3×111215026345³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (111215026343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932505 + ... + 1044985.

It is an arithmetic number, because the mean of its divisors is an integer number (8611621920).

Almost surely, 2^111215026345 is an apocalyptic number.

It is an amenable number.

111215026345 is a deficient number, since it is larger than the sum of its proper divisors (26570924375).

111215026345 is a wasteful number, since it uses less digits than its factorization.

111215026345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118896.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 111215026345 its reverse (543620512111), we get a palindrome (654835538456).

The spelling of 111215026345 in words is "one hundred eleven billion, two hundred fifteen million, twenty-six thousand, three hundred forty-five".