21132341344220 has 12 divisors (see below), whose sum is σ = 44377916822904. Its totient is φ = 8452936537680.

The previous prime is 21132341344207. The next prime is 21132341344321. The reversal of 21132341344220 is 2244314323112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528308533586 + ... + 528308533625.

It is an arithmetic number, because the mean of its divisors is an integer number (3698159735242).

Almost surely, 2^{21132341344220} is an apocalyptic number.

21132341344220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132341344220 is an abundant number, since it is smaller than the sum of its proper divisors (23245575478684).

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

21132341344220 is a wasteful number, since it uses less digits than its factorization.

21132341344220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056617067220 (or 1056617067218 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21132341344220 its reverse (2244314323112), we get a palindrome (23376655667332).

The spelling of 21132341344220 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred forty-one million, three hundred forty-four thousand, two hundred twenty".