111415420221 has 32 divisors (see below), whose sum is σ = 171128567808. Its totient is φ = 63159021120.

The previous prime is 111415420213. The next prime is 111415420223. The reversal of 111415420221 is 122024514111.

It is not a de Polignac number, because 111415420221 - 2³ = 111415420213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111415420191 and 111415420200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111415420223) 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 31 ways as a sum of consecutive naturals, for example, 12603415 + ... + 12612251.

It is an arithmetic number, because the mean of its divisors is an integer number (5347767744).

Almost surely, 2^111415420221 is an apocalyptic number.

It is an amenable number.

111415420221 is a deficient number, since it is larger than the sum of its proper divisors (59713147587).

111415420221 is a wasteful number, since it uses less digits than its factorization.

111415420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 111415420221 its reverse (122024514111), we get a palindrome (233439934332).

The spelling of 111415420221 in words is "one hundred eleven billion, four hundred fifteen million, four hundred twenty thousand, two hundred twenty-one".