21200404201 has 8 divisors (see below), whose sum is σ = 21409890944. Its totient is φ = 20990988000.

The previous prime is 21200404153. The next prime is 21200404229. The reversal of 21200404201 is 10240400212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21200404201 - 2¹⁵ = 21200371433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200404241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750076 + ... + 777826.

It is an arithmetic number, because the mean of its divisors is an integer number (2676236368).

Almost surely, 2^21200404201 is an apocalyptic number.

It is an amenable number.

21200404201 is a deficient number, since it is larger than the sum of its proper divisors (209486743).

21200404201 is a wasteful number, since it uses less digits than its factorization.

21200404201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35271.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21200404201 its reverse (10240400212), we get a palindrome (31440804413).

The spelling of 21200404201 in words is "twenty-one billion, two hundred million, four hundred four thousand, two hundred one".