13421121340 has 48 divisors (see below), whose sum is σ = 30762353664. Its totient is φ = 4877902400.

The previous prime is 13421121319. The next prime is 13421121383. The reversal of 13421121340 is 4312112431.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444525 + ... + 473755.

It is an arithmetic number, because the mean of its divisors is an integer number (640882368).

Almost surely, 2^13421121340 is an apocalyptic number.

13421121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13421121340 is an abundant number, since it is smaller than the sum of its proper divisors (17341232324).

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

13421121340 is a wasteful number, since it uses less digits than its factorization.

13421121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31338 (or 31336 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13421121340 its reverse (4312112431), we get a palindrome (17733233771).

It can be divided in two parts, 134211 and 21340, that added together give a palindrome (155551).

The spelling of 13421121340 in words is "thirteen billion, four hundred twenty-one million, one hundred twenty-one thousand, three hundred forty".