13235291220 has 96 divisors (see below), whose sum is σ = 38066047488. Its totient is φ = 3434758272.

The previous prime is 13235291213. The next prime is 13235291233. The reversal of 13235291220 is 2219253231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313827 + ... + 353493.

It is an arithmetic number, because the mean of its divisors is an integer number (396521328).

Almost surely, 2^13235291220 is an apocalyptic number.

13235291220 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 13235291220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19033023744).

13235291220 is an abundant number, since it is smaller than the sum of its proper divisors (24830756268).

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

13235291220 is a wasteful number, since it uses less digits than its factorization.

13235291220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39829 (or 39827 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 13235291220 in words is "thirteen billion, two hundred thirty-five million, two hundred ninety-one thousand, two hundred twenty".