21232213101 has 32 divisors (see below), whose sum is σ = 34826880000. Its totient is φ = 12675936240.

The previous prime is 21232213039. The next prime is 21232213117. The reversal of 21232213101 is 10131223212.

21232213101 is a `hidden beast` number, since 212 + 322 + 131 + 0 + 1 = 666.

It is not a de Polignac number, because 21232213101 - 2²⁹ = 20695342189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232213181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513601 + ... + 553398.

It is an arithmetic number, because the mean of its divisors is an integer number (1088340000).

Almost surely, 2^21232213101 is an apocalyptic number.

It is an amenable number.

21232213101 is a deficient number, since it is larger than the sum of its proper divisors (13594666899).

21232213101 is a wasteful number, since it uses less digits than its factorization.

21232213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067086 (or 1067080 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21232213101 its reverse (10131223212), we get a palindrome (31363436313).

The spelling of 21232213101 in words is "twenty-one billion, two hundred thirty-two million, two hundred thirteen thousand, one hundred one".