21200324034 has 32 divisors (see below), whose sum is σ = 44171023680. Its totient is φ = 6777555200.

The previous prime is 21200324021. The next prime is 21200324071. The reversal of 21200324034 is 43042300212.

It is a self number, because there is not a number n which added to its sum of digits gives 21200324034.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715827 + ... + 744854.

It is an arithmetic number, because the mean of its divisors is an integer number (1380344490).

Almost surely, 2^21200324034 is an apocalyptic number.

21200324034 is an abundant number, since it is smaller than the sum of its proper divisors (22970699646).

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

21200324034 is a wasteful number, since it uses less digits than its factorization.

21200324034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460786.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21200324034 its reverse (43042300212), we get a palindrome (64242624246).

The spelling of 21200324034 in words is "twenty-one billion, two hundred million, three hundred twenty-four thousand, thirty-four".