21002224201 has 8 divisors (see below), whose sum is σ = 25414456320. Its totient is φ = 16942970688.

The previous prime is 21002224169. The next prime is 21002224213. The reversal of 21002224201 is 10242220012.

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

It is not a de Polignac number, because 21002224201 - 2⁵ = 21002224169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002224231) 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, 88244521 + ... + 88244758.

It is an arithmetic number, because the mean of its divisors is an integer number (3176807040).

Almost surely, 2^21002224201 is an apocalyptic number.

It is an amenable number.

21002224201 is a deficient number, since it is larger than the sum of its proper divisors (4412232119).

21002224201 is a wasteful number, since it uses less digits than its factorization.

21002224201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176489303.

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

Adding to 21002224201 its reverse (10242220012), we get a palindrome (31244444213).

The spelling of 21002224201 in words is "twenty-one billion, two million, two hundred twenty-four thousand, two hundred one".