21347204000 has 48 divisors (see below), whose sum is σ = 52450090056. Its totient is φ = 8538880000.

The previous prime is 21347203987. The next prime is 21347204009. The reversal of 21347204000 is 40274312.

It can be written as a sum of positive squares in 4 ways, for example, as 8676549904 + 12670654096 = 93148^2 + 112564^2 .

It is not an unprimeable number, because it can be changed into a prime (21347204009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2664401 + ... + 2672400.

Almost surely, 2^21347204000 is an apocalyptic number.

21347204000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21347204000 is an abundant number, since it is smaller than the sum of its proper divisors (31102886056).

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

21347204000 is an equidigital number, since it uses as much as digits as its factorization.

21347204000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336826 (or 5336808 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

Adding to 21347204000 its reverse (40274312), we get a palindrome (21387478312).

The spelling of 21347204000 in words is "twenty-one billion, three hundred forty-seven million, two hundred four thousand".