21301311313320 has 64 divisors (see below), whose sum is σ = 64562737417920. Its totient is φ = 5621789374464.

The previous prime is 21301311313277. The next prime is 21301311313327. The reversal of 21301311313320 is 2331311310312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21301311313327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914993142 + ... + 915016421.

It is an arithmetic number, because the mean of its divisors is an integer number (1008792772155).

Almost surely, 2^{21301311313320} is an apocalyptic number.

21301311313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301311313320 is an abundant number, since it is smaller than the sum of its proper divisors (43261426104600).

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

21301311313320 is a wasteful number, since it uses less digits than its factorization.

21301311313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830009674 (or 1830009670 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21301311313320 its reverse (2331311310312), we get a palindrome (23632622623632).

The spelling of 21301311313320 in words is "twenty-one trillion, three hundred one billion, three hundred eleven million, three hundred thirteen thousand, three hundred twenty".