111323121401 has 4 divisors (see below), whose sum is σ = 111401354112. Its totient is φ = 111244888692.

The previous prime is 111323121389. The next prime is 111323121451. The reversal of 111323121401 is 104121323111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104121323111 = 13 ⋅8009332547.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111323121401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111323121451) 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 3 ways as a sum of consecutive naturals, for example, 39114221 + ... + 39117066.

It is an arithmetic number, because the mean of its divisors is an integer number (27850338528).

Almost surely, 2^111323121401 is an apocalyptic number.

It is an amenable number.

111323121401 is a deficient number, since it is larger than the sum of its proper divisors (78232711).

111323121401 is an equidigital number, since it uses as much as digits as its factorization.

111323121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78232710.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 111323121401 its reverse (104121323111), we get a palindrome (215444444512).

The spelling of 111323121401 in words is "one hundred eleven billion, three hundred twenty-three million, one hundred twenty-one thousand, four hundred one".