21073067200 has 168 divisors, whose sum is σ = 54985716800. Its totient is φ = 7926543360.

The previous prime is 21073067161. The next prime is 21073067203. The reversal of 21073067200 is 276037012.

It is a super-2 number, since 2×21073067200² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21073067203) 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, 4223107 + ... + 4228093.

Almost surely, 2^21073067200 is an apocalyptic number.

21073067200 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 21073067200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27492858400).

21073067200 is an abundant number, since it is smaller than the sum of its proper divisors (33912649600).

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

21073067200 is a wasteful number, since it uses less digits than its factorization.

21073067200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167 (or 5152 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The spelling of 21073067200 in words is "twenty-one billion, seventy-three million, sixty-seven thousand, two hundred".