21032202311 has 4 divisors (see below), whose sum is σ = 21298432800. Its totient is φ = 20765971824.

The previous prime is 21032202299. The next prime is 21032202377. The reversal of 21032202311 is 11320223012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032202311 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 21032202311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032202211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133115126 + ... + 133115283.

It is an arithmetic number, because the mean of its divisors is an integer number (5324608200).

Almost surely, 2^21032202311 is an apocalyptic number.

21032202311 is a deficient number, since it is larger than the sum of its proper divisors (266230489).

21032202311 is an equidigital number, since it uses as much as digits as its factorization.

21032202311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266230488.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21032202311 its reverse (11320223012), we get a palindrome (32352425323).

The spelling of 21032202311 in words is "twenty-one billion, thirty-two million, two hundred two thousand, three hundred eleven".