21211011201 has 8 divisors (see below), whose sum is σ = 29045709184. Its totient is φ = 13758493680.

The previous prime is 21211011193. The next prime is 21211011203. The reversal of 21211011201 is 10211011212.

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

It is not a de Polignac number, because 21211011201 - 2³ = 21211011193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21211011203) 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 7 ways as a sum of consecutive naturals, for example, 95544985 + ... + 95545206.

It is an arithmetic number, because the mean of its divisors is an integer number (3630713648).

Almost surely, 2^21211011201 is an apocalyptic number.

It is an amenable number.

21211011201 is a deficient number, since it is larger than the sum of its proper divisors (7834697983).

21211011201 is a wasteful number, since it uses less digits than its factorization.

21211011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191090231.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21211011201 its reverse (10211011212), we get a palindrome (31422022413).

It can be divided in two parts, 21211011 and 201, that added together give a palindrome (21211212).

The spelling of 21211011201 in words is "twenty-one billion, two hundred eleven million, eleven thousand, two hundred one".