21234110201 has 4 divisors (see below), whose sum is σ = 21250713600. Its totient is φ = 21217506804.

The previous prime is 21234110159. The next prime is 21234110221. The reversal of 21234110201 is 10201143212.

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 21234110201 - 2¹⁴ = 21234093817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21234110201.

It is not an unprimeable number, because it can be changed into a prime (21234110221) 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, 8299781 + ... + 8302338.

It is an arithmetic number, because the mean of its divisors is an integer number (5312678400).

Almost surely, 2^21234110201 is an apocalyptic number.

It is an amenable number.

21234110201 is a deficient number, since it is larger than the sum of its proper divisors (16603399).

21234110201 is a wasteful number, since it uses less digits than its factorization.

21234110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16603398.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21234110201 its reverse (10201143212), we get a palindrome (31435253413).

The spelling of 21234110201 in words is "twenty-one billion, two hundred thirty-four million, one hundred ten thousand, two hundred one".