201112041421 has 4 divisors (see below), whose sum is σ = 201313759612. Its totient is φ = 200910323232.

The previous prime is 201112041409. The next prime is 201112041437. The reversal of 201112041421 is 124140211102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189912052521 + 11199988900 = 435789^2 + 105830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201112041421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112041401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100857600 + ... + 100859593.

It is an arithmetic number, because the mean of its divisors is an integer number (50328439903).

Almost surely, 2^201112041421 is an apocalyptic number.

It is an amenable number.

201112041421 is a deficient number, since it is larger than the sum of its proper divisors (201718191).

201112041421 is an equidigital number, since it uses as much as digits as its factorization.

201112041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201718190.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201112041421 its reverse (124140211102), we get a palindrome (325252252523).

The spelling of 201112041421 in words is "two hundred one billion, one hundred twelve million, forty-one thousand, four hundred twenty-one".