13111321204020 has 96 divisors (see below), whose sum is σ = 39537011582208. Its totient is φ = 3227293135872.

The previous prime is 13111321203997. The next prime is 13111321204027. The reversal of 13111321204020 is 2040212311131.

It is a super-3 number, since 3×13111321204020³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111321204027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24174657 + ... + 24711063.

It is an arithmetic number, because the mean of its divisors is an integer number (411843870648).

Almost surely, 2^{13111321204020} is an apocalyptic number.

13111321204020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111321204020 is an abundant number, since it is smaller than the sum of its proper divisors (26425690378188).

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

13111321204020 is a wasteful number, since it uses less digits than its factorization.

13111321204020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567769 (or 567767 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13111321204020 its reverse (2040212311131), we get a palindrome (15151533515151).

It can be divided in two parts, 1311132 and 1204020, that added together give a palindrome (2515152).

The spelling of 13111321204020 in words is "thirteen trillion, one hundred eleven billion, three hundred twenty-one million, two hundred four thousand, twenty".