13001121240 has 64 divisors (see below), whose sum is σ = 39242707200. Its totient is φ = 3445690752.

The previous prime is 13001121239. The next prime is 13001121271. The reversal of 13001121240 is 4212110031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312780 + ... + 351899.

It is an arithmetic number, because the mean of its divisors is an integer number (613167300).

Almost surely, 2^13001121240 is an apocalyptic number.

13001121240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001121240 is an abundant number, since it is smaller than the sum of its proper divisors (26241585960).

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

13001121240 is a wasteful number, since it uses less digits than its factorization.

13001121240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664856 (or 664852 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13001121240 its reverse (4212110031), we get a palindrome (17213231271).

The spelling of 13001121240 in words is "thirteen billion, one million, one hundred twenty-one thousand, two hundred forty".