13011421300 has 72 divisors (see below), whose sum is σ = 29331169560. Its totient is φ = 5003980800.

The previous prime is 13011421261. The next prime is 13011421309. The reversal of 13011421300 is 312411031.

It can be written as a sum of positive squares in 12 ways, for example, as 79637776 + 12931783524 = 8924^2 + 113718^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011421309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 689592 + ... + 708208.

It is an arithmetic number, because the mean of its divisors is an integer number (407377355).

Almost surely, 2^13011421300 is an apocalyptic number.

13011421300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13011421300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14665584780).

13011421300 is an abundant number, since it is smaller than the sum of its proper divisors (16319748260).

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

13011421300 is a wasteful number, since it uses less digits than its factorization.

13011421300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18901 (or 18894 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13011421300 its reverse (312411031), we get a palindrome (13323832331).

The spelling of 13011421300 in words is "thirteen billion, eleven million, four hundred twenty-one thousand, three hundred".