21233110601 has 2 divisors, whose sum is σ = 21233110602. Its totient is φ = 21233110600.

The previous prime is 21233110589. The next prime is 21233110609. The reversal of 21233110601 is 10601133212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20844429376 + 388681225 = 144376^2 + 19715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21233110601 is a prime.

It is not a weakly prime, because it can be changed into another prime (21233110609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616555300 + 10616555301.

It is an arithmetic number, because the mean of its divisors is an integer number (10616555301).

Almost surely, 2^21233110601 is an apocalyptic number.

It is an amenable number.

21233110601 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233110601 is an equidigital number, since it uses as much as digits as its factorization.

21233110601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21233110601 its reverse (10601133212), we get a palindrome (31834243813).

The spelling of 21233110601 in words is "twenty-one billion, two hundred thirty-three million, one hundred ten thousand, six hundred one".