21341022340 has 96 divisors (see below), whose sum is σ = 50249445120. Its totient is φ = 7545907200.

The previous prime is 21341022253. The next prime is 21341022361. The reversal of 21341022340 is 4322014312.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2819481 + ... + 2827039.

It is an arithmetic number, because the mean of its divisors is an integer number (523431720).

Almost surely, 2^21341022340 is an apocalyptic number.

21341022340 is a gapful number since it is divisible by the number (20) 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 21341022340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25124722560).

21341022340 is an abundant number, since it is smaller than the sum of its proper divisors (28908422780).

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

21341022340 is a wasteful number, since it uses less digits than its factorization.

21341022340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7933 (or 7931 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21341022340 its reverse (4322014312), we get a palindrome (25663036652).

The spelling of 21341022340 in words is "twenty-one billion, three hundred forty-one million, twenty-two thousand, three hundred forty".