21230002201 has 4 divisors (see below), whose sum is σ = 21230370000. Its totient is φ = 21229634404.

The previous prime is 21230002193. The next prime is 21230002207. The reversal of 21230002201 is 10220003212.

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 21230002201 - 2³ = 21230002193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21230002207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76351 + ... + 219748.

It is an arithmetic number, because the mean of its divisors is an integer number (5307592500).

Almost surely, 2^21230002201 is an apocalyptic number.

It is an amenable number.

21230002201 is a deficient number, since it is larger than the sum of its proper divisors (367799).

21230002201 is an equidigital number, since it uses as much as digits as its factorization.

21230002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367798.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21230002201 its reverse (10220003212), we get a palindrome (31450005413).

The spelling of 21230002201 in words is "twenty-one billion, two hundred thirty million, two thousand, two hundred one".