13021031202123 has 16 divisors (see below), whose sum is σ = 19841643553536. Its totient is φ = 7440562184160.

The previous prime is 13021031202097. The next prime is 13021031202161. The reversal of 13021031202123 is 32120213012031.

It is not a de Polignac number, because 13021031202123 - 2¹² = 13021031198027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13021031202123.

It is not an unprimeable number, because it can be changed into a prime (13021031702123) 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, 5758165 + ... + 7694057.

It is an arithmetic number, because the mean of its divisors is an integer number (1240102722096).

Almost surely, 2^{13021031202123} is an apocalyptic number.

13021031202123 is a deficient number, since it is larger than the sum of its proper divisors (6820612351413).

13021031202123 is a wasteful number, since it uses less digits than its factorization.

13021031202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256194.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13021031202123 its reverse (32120213012031), we get a palindrome (45141244214154).

The spelling of 13021031202123 in words is "thirteen trillion, twenty-one billion, thirty-one million, two hundred two thousand, one hundred twenty-three".