121011123001 has 24 divisors (see below), whose sum is σ = 130509973440. Its totient is φ = 112167320832.

The previous prime is 121011122977. The next prime is 121011123007. The reversal of 121011123001 is 100321110121.

It is a happy number.

It is not a de Polignac number, because 121011123001 - 2²³ = 121002734393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011123007) 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 23 ways as a sum of consecutive naturals, for example, 5249166 + ... + 5272168.

It is an arithmetic number, because the mean of its divisors is an integer number (5437915560).

Almost surely, 2^121011123001 is an apocalyptic number.

It is an amenable number.

121011123001 is a deficient number, since it is larger than the sum of its proper divisors (9498850439).

121011123001 is a wasteful number, since it uses less digits than its factorization.

121011123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23313 (or 23296 counting only the distinct ones).

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

Adding to 121011123001 its reverse (100321110121), we get a palindrome (221332233122).

The spelling of 121011123001 in words is "one hundred twenty-one billion, eleven million, one hundred twenty-three thousand, one".