21303010101 has 4 divisors (see below), whose sum is σ = 28404013472. Its totient is φ = 14202006732.

The previous prime is 21303010093. The next prime is 21303010103. The reversal of 21303010101 is 10101030312.

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 not a de Polignac number, because 21303010101 - 2³ = 21303010093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303010103) 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, 3550501681 + ... + 3550501686.

It is an arithmetic number, because the mean of its divisors is an integer number (7101003368).

Almost surely, 2^21303010101 is an apocalyptic number.

It is an amenable number.

21303010101 is a deficient number, since it is larger than the sum of its proper divisors (7101003371).

21303010101 is an equidigital number, since it uses as much as digits as its factorization.

21303010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101003370.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21303010101 its reverse (10101030312), we get a palindrome (31404040413).

The spelling of 21303010101 in words is "twenty-one billion, three hundred three million, ten thousand, one hundred one".