21202230011 has 16 divisors (see below), whose sum is σ = 21821328384. Its totient is φ = 20594456064.

The previous prime is 21202229999. The next prime is 21202230013. The reversal of 21202230011 is 11003220212.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202230011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202230013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1261781 + ... + 1278473.

It is an arithmetic number, because the mean of its divisors is an integer number (1363833024).

Almost surely, 2^21202230011 is an apocalyptic number.

21202230011 is a deficient number, since it is larger than the sum of its proper divisors (619098373).

21202230011 is a wasteful number, since it uses less digits than its factorization.

21202230011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21202230011 its reverse (11003220212), we get a palindrome (32205450223).

The spelling of 21202230011 in words is "twenty-one billion, two hundred two million, two hundred thirty thousand, eleven".