123121300233 has 32 divisors (see below), whose sum is σ = 174496498560. Its totient is φ = 77071357440.

The previous prime is 123121300229. The next prime is 123121300243. The reversal of 123121300233 is 332003121321.

It is not a de Polignac number, because 123121300233 - 2² = 123121300229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123121300213) 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 31 ways as a sum of consecutive naturals, for example, 7643518 + ... + 7659608.

It is an arithmetic number, because the mean of its divisors is an integer number (5453015580).

Almost surely, 2^123121300233 is an apocalyptic number.

It is an amenable number.

123121300233 is a deficient number, since it is larger than the sum of its proper divisors (51375198327).

123121300233 is a wasteful number, since it uses less digits than its factorization.

123121300233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123121300233 its reverse (332003121321), we get a palindrome (455124421554).

The spelling of 123121300233 in words is "one hundred twenty-three billion, one hundred twenty-one million, three hundred thousand, two hundred thirty-three".