13123011321203 has 16 divisors (see below), whose sum is σ = 15188228474880. Its totient is φ = 11105431792416.

The previous prime is 13123011321187. The next prime is 13123011321209. The reversal of 13123011321203 is 30212311032131.

It is a cyclic number.

It is not a de Polignac number, because 13123011321203 - 2⁴ = 13123011321187 is a prime.

It is a super-2 number, since 2×13123011321203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123011321209) 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, 12592250 + ... + 13594512.

It is an arithmetic number, because the mean of its divisors is an integer number (949264279680).

Almost surely, 2^{13123011321203} is an apocalyptic number.

13123011321203 is a deficient number, since it is larger than the sum of its proper divisors (2065217153677).

13123011321203 is a wasteful number, since it uses less digits than its factorization.

13123011321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026026.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13123011321203 its reverse (30212311032131), we get a palindrome (43335322353334).

The spelling of 13123011321203 in words is "thirteen trillion, one hundred twenty-three billion, eleven million, three hundred twenty-one thousand, two hundred three".