21332330101 has 2 divisors, whose sum is σ = 21332330102. Its totient is φ = 21332330100.

The previous prime is 21332330093. The next prime is 21332330137. The reversal of 21332330101 is 10103323312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12826695025 + 8505635076 = 113255^2 + 92226^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332330101 - 2³ = 21332330093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332330141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666165050 + 10666165051.

It is an arithmetic number, because the mean of its divisors is an integer number (10666165051).

Almost surely, 2^21332330101 is an apocalyptic number.

It is an amenable number.

21332330101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332330101 is an equidigital number, since it uses as much as digits as its factorization.

21332330101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21332330101 its reverse (10103323312), we get a palindrome (31435653413).

The spelling of 21332330101 in words is "twenty-one billion, three hundred thirty-two million, three hundred thirty thousand, one hundred one".