21200324104 has 8 divisors (see below), whose sum is σ = 39750607710. Its totient is φ = 10600162048.

The previous prime is 21200324077. The next prime is 21200324141. The reversal of 21200324104 is 40142300212.

It can be written as a sum of positive squares in only one way, i.e., 18119852100 + 3080472004 = 134610^2 + 55502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21200324104² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325020249 + ... + 1325020264.

Almost surely, 2^21200324104 is an apocalyptic number.

It is an amenable number.

21200324104 is a deficient number, since it is larger than the sum of its proper divisors (18550283606).

21200324104 is a wasteful number, since it uses less digits than its factorization.

21200324104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650040519 (or 2650040515 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21200324104 its reverse (40142300212), we get a palindrome (61342624316).

The spelling of 21200324104 in words is "twenty-one billion, two hundred million, three hundred twenty-four thousand, one hundred four".