123121322003 has 8 divisors (see below), whose sum is σ = 123675173856. Its totient is φ = 122567688000.

The previous prime is 123121321987. The next prime is 123121322033. The reversal of 123121322003 is 300223121321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123121322003 - 2⁴ = 123121321987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123121322033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136738 + ... + 1240328.

It is an arithmetic number, because the mean of its divisors is an integer number (15459396732).

Almost surely, 2^123121322003 is an apocalyptic number.

123121322003 is a deficient number, since it is larger than the sum of its proper divisors (553851853).

123121322003 is a wasteful number, since it uses less digits than its factorization.

123121322003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108925.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123121322003 its reverse (300223121321), we get a palindrome (423344443324).

The spelling of 123121322003 in words is "one hundred twenty-three billion, one hundred twenty-one million, three hundred twenty-two thousand, three".