111123012001 has 4 divisors (see below), whose sum is σ = 116971591600. Its totient is φ = 105274432404.

The previous prime is 111123011983. The next prime is 111123012053. The reversal of 111123012001 is 100210321111.

It is a happy number.

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: 100210321111 = 20269 ⋅4944019.

It is a cyclic number.

It is not a de Polignac number, because 111123012001 - 2⁷ = 111123011873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123015001) 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, 2924289771 + ... + 2924289808.

It is an arithmetic number, because the mean of its divisors is an integer number (29242897900).

Almost surely, 2^111123012001 is an apocalyptic number.

It is an amenable number.

111123012001 is a deficient number, since it is larger than the sum of its proper divisors (5848579599).

111123012001 is an equidigital number, since it uses as much as digits as its factorization.

111123012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848579598.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111123012001 its reverse (100210321111), we get a palindrome (211333333112).

The spelling of 111123012001 in words is "one hundred eleven billion, one hundred twenty-three million, twelve thousand, one".