21345930200 has 96 divisors (see below), whose sum is σ = 57789560160. Its totient is φ = 7180492800.

The previous prime is 21345930197. The next prime is 21345930217. The reversal of 21345930200 is 203954312.

It is a super-2 number, since 2×21345930200² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69641 + ... + 218040.

It is an arithmetic number, because the mean of its divisors is an integer number (601974585).

Almost surely, 2^21345930200 is an apocalyptic number.

21345930200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21345930200 is an abundant number, since it is smaller than the sum of its proper divisors (36443629960).

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

21345930200 is a wasteful number, since it uses less digits than its factorization.

21345930200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287757 (or 287748 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 21345930200 in words is "twenty-one billion, three hundred forty-five million, nine hundred thirty thousand, two hundred".