13121000123202 has 20 divisors (see below), whose sum is σ = 29400759535686. Its totient is φ = 4373666707680.

The previous prime is 13121000123191. The next prime is 13121000123279. The reversal of 13121000123202 is 20232100012131.

13121000123202 is a `hidden beast` number, since 131 + 210 + 0 + 0 + 1 + 2 + 320 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10211993575641 + 2909006547561 = 3195621^2 + 1705581^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40496913799 + ... + 40496914122.

Almost surely, 2^{13121000123202} is an apocalyptic number.

13121000123202 is an abundant number, since it is smaller than the sum of its proper divisors (16279759412484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121000123202 is an equidigital number, since it uses as much as digits as its factorization.

13121000123202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80993827935 (or 80993827926 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13121000123202 its reverse (20232100012131), we get a palindrome (33353100135333).

The spelling of 13121000123202 in words is "thirteen trillion, one hundred twenty-one billion, one hundred twenty-three thousand, two hundred two".