13220043340 has 48 divisors (see below), whose sum is σ = 32326765632. Its totient is φ = 4447063296.

The previous prime is 13220043337. The next prime is 13220043377. The reversal of 13220043340 is 4334002231.

It is a happy number.

It is a super-2 number, since 2×13220043340² (a number of 21 digits) contains 22 as substring.

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, 883419 + ... + 898258.

It is an arithmetic number, because the mean of its divisors is an integer number (673474284).

Almost surely, 2^13220043340 is an apocalyptic number.

13220043340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220043340 is an abundant number, since it is smaller than the sum of its proper divisors (19106722292).

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

13220043340 is a wasteful number, since it uses less digits than its factorization.

13220043340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781746 (or 1781744 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 13220043340 its reverse (4334002231), we get a palindrome (17554045571).

The spelling of 13220043340 in words is "thirteen billion, two hundred twenty million, forty-three thousand, three hundred forty".