111141412021 has 8 divisors (see below), whose sum is σ = 113063528600. Its totient is φ = 109222525440.

The previous prime is 111141412003. The next prime is 111141412037. The reversal of 111141412021 is 120214141111.

It can be written as a sum of positive squares in 4 ways, for example, as 24060352996 + 87081059025 = 155114^2 + 295095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111141412021 - 2⁷ = 111141411893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111141412021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111141412051) 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 7 ways as a sum of consecutive naturals, for example, 738036 + ... + 875773.

It is an arithmetic number, because the mean of its divisors is an integer number (14132941075).

Almost surely, 2^111141412021 is an apocalyptic number.

It is an amenable number.

111141412021 is a deficient number, since it is larger than the sum of its proper divisors (1922116579).

111141412021 is a wasteful number, since it uses less digits than its factorization.

111141412021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614999.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111141412021 its reverse (120214141111), we get a palindrome (231355553132).

The spelling of 111141412021 in words is "one hundred eleven billion, one hundred forty-one million, four hundred twelve thousand, twenty-one".