21210220010201 has 4 divisors (see below), whose sum is σ = 21328712859600. Its totient is φ = 21091727160804.

The previous prime is 21210220010191. The next prime is 21210220010233. The reversal of 21210220010201 is 10201002201212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21210220010201 - 2³⁰ = 21209146268377 is a prime.

It is a super-2 number, since 2×21210220010201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210820010201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59246424431 + ... + 59246424788.

It is an arithmetic number, because the mean of its divisors is an integer number (5332178214900).

Almost surely, 2^{21210220010201} is an apocalyptic number.

It is an amenable number.

21210220010201 is a deficient number, since it is larger than the sum of its proper divisors (118492849399).

21210220010201 is a wasteful number, since it uses less digits than its factorization.

21210220010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118492849398.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210220010201 its reverse (10201002201212), we get a palindrome (31411222211413).

The spelling of 21210220010201 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty million, ten thousand, two hundred one".