121112123001 has 4 divisors (see below), whose sum is σ = 161482830672. Its totient is φ = 80741415332.

The previous prime is 121112122969. The next prime is 121112123039. The reversal of 121112123001 is 100321211121.

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 121112123001 - 2⁵ = 121112122969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121112123501) 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, 20185353831 + ... + 20185353836.

It is an arithmetic number, because the mean of its divisors is an integer number (40370707668).

Almost surely, 2^121112123001 is an apocalyptic number.

It is an amenable number.

121112123001 is a deficient number, since it is larger than the sum of its proper divisors (40370707671).

121112123001 is an equidigital number, since it uses as much as digits as its factorization.

121112123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40370707670.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121112123001 its reverse (100321211121), we get a palindrome (221433334122).

The spelling of 121112123001 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred twenty-three thousand, one".