21101323301 has 4 divisors (see below), whose sum is σ = 21103493100. Its totient is φ = 21099153504.

The previous prime is 21101323277. The next prime is 21101323333. The reversal of 21101323301 is 10332310112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5657296225 + 15444027076 = 75215^2 + 124274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21101323301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21101323301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101320301) 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, 1070246 + ... + 1089783.

It is an arithmetic number, because the mean of its divisors is an integer number (5275873275).

Almost surely, 2^21101323301 is an apocalyptic number.

It is an amenable number.

21101323301 is a deficient number, since it is larger than the sum of its proper divisors (2169799).

21101323301 is an equidigital number, since it uses as much as digits as its factorization.

21101323301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169798.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21101323301 its reverse (10332310112), we get a palindrome (31433633413).

The spelling of 21101323301 in words is "twenty-one billion, one hundred one million, three hundred twenty-three thousand, three hundred one".