21214064325320 has 128 divisors (see below), whose sum is σ = 50003359257600. Its totient is φ = 8084699023104.

The previous prime is 21214064325281. The next prime is 21214064325323. The reversal of 21214064325320 is 2352346041212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21214064325323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692281919 + ... + 692312561.

It is an arithmetic number, because the mean of its divisors is an integer number (390651244200).

Almost surely, 2^{21214064325320} is an apocalyptic number.

21214064325320 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 21214064325320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25001679628800).

21214064325320 is an abundant number, since it is smaller than the sum of its proper divisors (28789294932280).

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

21214064325320 is a wasteful number, since it uses less digits than its factorization.

21214064325320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33619 (or 33615 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 21214064325320 in words is "twenty-one trillion, two hundred fourteen billion, sixty-four million, three hundred twenty-five thousand, three hundred twenty".