13121231221203 has 64 divisors (see below), whose sum is σ = 22409715778560. Its totient is φ = 6655006052352.

The previous prime is 13121231221181. The next prime is 13121231221229. The reversal of 13121231221203 is 30212213212131.

It is not a de Polignac number, because 13121231221203 - 2⁵ = 13121231221171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13121231221003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14291850 + ... + 15182207.

It is an arithmetic number, because the mean of its divisors is an integer number (350151809040).

Almost surely, 2^{13121231221203} is an apocalyptic number.

13121231221203 is a deficient number, since it is larger than the sum of its proper divisors (9288484557357).

13121231221203 is a wasteful number, since it uses less digits than its factorization.

13121231221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29474156.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13121231221203 its reverse (30212213212131), we get a palindrome (43333444433334).

The spelling of 13121231221203 in words is "thirteen trillion, one hundred twenty-one billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred three".