13211235513020 has 24 divisors (see below), whose sum is σ = 28134349433568. Its totient is φ = 5210064708800.

The previous prime is 13211235513019. The next prime is 13211235513079. The reversal of 13211235513020 is 2031553211231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4651842071 + ... + 4651844910.

It is an arithmetic number, because the mean of its divisors is an integer number (1172264559732).

Almost surely, 2^{13211235513020} is an apocalyptic number.

13211235513020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13211235513020 is an abundant number, since it is smaller than the sum of its proper divisors (14923113920548).

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

13211235513020 is a wasteful number, since it uses less digits than its factorization.

13211235513020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303687061 (or 9303687059 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 13211235513020 its reverse (2031553211231), we get a palindrome (15242788724251).

The spelling of 13211235513020 in words is "thirteen trillion, two hundred eleven billion, two hundred thirty-five million, five hundred thirteen thousand, twenty".