121321223203 has 16 divisors (see below), whose sum is σ = 127962633600. Its totient is φ = 114705676800.

The previous prime is 121321223201. The next prime is 121321223209. The reversal of 121321223203 is 302322123121.

It is a cyclic number.

It is not a de Polignac number, because 121321223203 - 2¹ = 121321223201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321223201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26127600 + ... + 26132242.

It is an arithmetic number, because the mean of its divisors is an integer number (7997664600).

Almost surely, 2^121321223203 is an apocalyptic number.

121321223203 is a deficient number, since it is larger than the sum of its proper divisors (6641410397).

121321223203 is a wasteful number, since it uses less digits than its factorization.

121321223203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 121321223203 its reverse (302322123121), we get a palindrome (423643346324).

The spelling of 121321223203 in words is "one hundred twenty-one billion, three hundred twenty-one million, two hundred twenty-three thousand, two hundred three".