21211030201 has 8 divisors (see below), whose sum is σ = 21615652224. Its totient is φ = 20806571760.

The previous prime is 21211030199. The next prime is 21211030231. The reversal of 21211030201 is 10203011212.

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

It is a cyclic number.

It is not a de Polignac number, because 21211030201 - 2¹ = 21211030199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211030231) 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, 238990 + ... + 315496.

It is an arithmetic number, because the mean of its divisors is an integer number (2701956528).

Almost surely, 2^21211030201 is an apocalyptic number.

It is an amenable number.

21211030201 is a deficient number, since it is larger than the sum of its proper divisors (404622023).

21211030201 is an equidigital number, since it uses as much as digits as its factorization.

21211030201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81791.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21211030201 its reverse (10203011212), we get a palindrome (31414041413).

The spelling of 21211030201 in words is "twenty-one billion, two hundred eleven million, thirty thousand, two hundred one".