21341204442140 has 96 divisors (see below), whose sum is σ = 49970995200000. Its totient is φ = 7589236561920.

The previous prime is 21341204442133. The next prime is 21341204442167. The reversal of 21341204442140 is 4124440214312.

It is a junction number, because it is equal to n+sod(n) for n = 21341204442097 and 21341204442106.

It is a congruent number.

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, 12088421 + ... + 13740899.

It is an arithmetic number, because the mean of its divisors is an integer number (520531200000).

Almost surely, 2^{21341204442140} is an apocalyptic number.

21341204442140 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 21341204442140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24985497600000).

21341204442140 is an abundant number, since it is smaller than the sum of its proper divisors (28629790757860).

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

21341204442140 is a wasteful number, since it uses less digits than its factorization.

21341204442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653795 (or 1653793 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 21341204442140 its reverse (4124440214312), we get a palindrome (25465644656452).

The spelling of 21341204442140 in words is "twenty-one trillion, three hundred forty-one billion, two hundred four million, four hundred forty-two thousand, one hundred forty".