1111112341421 has 4 divisors (see below), whose sum is σ = 1111115177052. Its totient is φ = 1111109505792.

The previous prime is 1111112341411. The next prime is 1111112341429. The reversal of 1111112341421 is 1241432111111.

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 779002177321 + 332110164100 = 882611^2 + 576290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111112341421 - 2¹⁸ = 1111112079277 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 (1111112341429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713396 + ... + 1652621.

It is an arithmetic number, because the mean of its divisors is an integer number (277778794263).

Almost surely, 2^{1111112341421} is an apocalyptic number.

It is an amenable number.

1111112341421 is a deficient number, since it is larger than the sum of its proper divisors (2835631).

1111112341421 is an equidigital number, since it uses as much as digits as its factorization.

1111112341421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835630.

The product of its digits is 192, while the sum is 23.

Adding to 1111112341421 its reverse (1241432111111), we get a palindrome (2352544452532).

The spelling of 1111112341421 in words is "one trillion, one hundred eleven billion, one hundred twelve million, three hundred forty-one thousand, four hundred twenty-one".