21342461120 has 28 divisors (see below), whose sum is σ = 50821736304. Its totient is φ = 8536984320.

The previous prime is 21342461089. The next prime is 21342461123. The reversal of 21342461120 is 2116424312.

It is a self number, because there is not a number n which added to its sum of digits gives 21342461120.

It is not an unprimeable number, because it can be changed into a prime (21342461123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33347276 + ... + 33347915.

Almost surely, 2^21342461120 is an apocalyptic number.

21342461120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21342461120 is an abundant number, since it is smaller than the sum of its proper divisors (29479275184).

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

21342461120 is an equidigital number, since it uses as much as digits as its factorization.

21342461120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66695208 (or 66695198 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21342461120 its reverse (2116424312), we get a palindrome (23458885432).

The spelling of 21342461120 in words is "twenty-one billion, three hundred forty-two million, four hundred sixty-one thousand, one hundred twenty".