111232240421 has 4 divisors (see below), whose sum is σ = 111380353344. Its totient is φ = 111084127500.

The previous prime is 111232240391. The next prime is 111232240447. The reversal of 111232240421 is 124042232111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111232240421 is a prime.

It is a super-2 number, since 2×111232240421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111232240121) 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, 74055335 + ... + 74056836.

It is an arithmetic number, because the mean of its divisors is an integer number (27845088336).

Almost surely, 2^111232240421 is an apocalyptic number.

It is an amenable number.

111232240421 is a deficient number, since it is larger than the sum of its proper divisors (148112923).

111232240421 is an equidigital number, since it uses as much as digits as its factorization.

111232240421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148112922.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 111232240421 its reverse (124042232111), we get a palindrome (235274472532).

The spelling of 111232240421 in words is "one hundred eleven billion, two hundred thirty-two million, two hundred forty thousand, four hundred twenty-one".