111220012401 has 4 divisors (see below), whose sum is σ = 148293349872. Its totient is φ = 74146674932.

The previous prime is 111220012381. The next prime is 111220012433. The reversal of 111220012401 is 104210022111.

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 not a de Polignac number, because 111220012401 - 2¹⁷ = 111219881329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111220012601) 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, 18536668731 + ... + 18536668736.

It is an arithmetic number, because the mean of its divisors is an integer number (37073337468).

Almost surely, 2^111220012401 is an apocalyptic number.

It is an amenable number.

111220012401 is a deficient number, since it is larger than the sum of its proper divisors (37073337471).

111220012401 is an equidigital number, since it uses as much as digits as its factorization.

111220012401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37073337470.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111220012401 its reverse (104210022111), we get a palindrome (215430034512).

The spelling of 111220012401 in words is "one hundred eleven billion, two hundred twenty million, twelve thousand, four hundred one".