21033130101 has 4 divisors (see below), whose sum is σ = 28044173472. Its totient is φ = 14022086732.

The previous prime is 21033130057. The next prime is 21033130127. The reversal of 21033130101 is 10103133012.

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 21033130101 - 2¹⁸ = 21032867957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033130171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505521681 + ... + 3505521686.

It is an arithmetic number, because the mean of its divisors is an integer number (7011043368).

Almost surely, 2^21033130101 is an apocalyptic number.

It is an amenable number.

21033130101 is a deficient number, since it is larger than the sum of its proper divisors (7011043371).

21033130101 is an equidigital number, since it uses as much as digits as its factorization.

21033130101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7011043370.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21033130101 its reverse (10103133012), we get a palindrome (31136263113).

The spelling of 21033130101 in words is "twenty-one billion, thirty-three million, one hundred thirty thousand, one hundred one".