21201347452320 has 144 divisors (see below), whose sum is σ = 82685255103360. Its totient is φ = 4846022272512.

The previous prime is 21201347452309. The next prime is 21201347452321. The reversal of 21201347452320 is 2325474310212.

21201347452320 is a `hidden beast` number, since 2 + 12 + 0 + 1 + 34 + 74 + 523 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21201347452321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051644060 + ... + 1051664219.

It is an arithmetic number, because the mean of its divisors is an integer number (574203160440).

Almost surely, 2^{21201347452320} is an apocalyptic number.

21201347452320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21201347452320 is an abundant number, since it is smaller than the sum of its proper divisors (61483907651040).

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

21201347452320 is a wasteful number, since it uses less digits than its factorization.

21201347452320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103308307 (or 2103308296 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 21201347452320 in words is "twenty-one trillion, two hundred one billion, three hundred forty-seven million, four hundred fifty-two thousand, three hundred twenty".