21411413220 has 24 divisors (see below), whose sum is σ = 59951957184. Its totient is φ = 5709710176.

The previous prime is 21411413203. The next prime is 21411413227. The reversal of 21411413220 is 2231411412.

It is not an unprimeable number, because it can be changed into a prime (21411413227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178428384 + ... + 178428503.

It is an arithmetic number, because the mean of its divisors is an integer number (2497998216).

Almost surely, 2^21411413220 is an apocalyptic number.

21411413220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21411413220 is an abundant number, since it is smaller than the sum of its proper divisors (38540543964).

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

21411413220 is a wasteful number, since it uses less digits than its factorization.

21411413220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356856899 (or 356856897 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21411413220 its reverse (2231411412), we get a palindrome (23642824632).

The spelling of 21411413220 in words is "twenty-one billion, four hundred eleven million, four hundred thirteen thousand, two hundred twenty".