111355400215 has 32 divisors (see below), whose sum is σ = 135800665344. Its totient is φ = 87647846400.

The previous prime is 111355400201. The next prime is 111355400239. The reversal of 111355400215 is 512004553111.

It is not a de Polignac number, because 111355400215 - 2⁵ = 111355400183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74885202 + ... + 74886688.

It is an arithmetic number, because the mean of its divisors is an integer number (4243770792).

Almost surely, 2^111355400215 is an apocalyptic number.

111355400215 is a deficient number, since it is larger than the sum of its proper divisors (24445265129).

111355400215 is a wasteful number, since it uses less digits than its factorization.

111355400215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 111355400215 its reverse (512004553111), we get a palindrome (623359953326).

The spelling of 111355400215 in words is "one hundred eleven billion, three hundred fifty-five million, four hundred thousand, two hundred fifteen".