20321813822 has 4 divisors (see below), whose sum is σ = 30482720736. Its totient is φ = 10160906910.

The previous prime is 20321813791. The next prime is 20321813851. The reversal of 20321813822 is 22831812302.

20321813822 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×20321813822² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080453454 + ... + 5080453457.

It is an arithmetic number, because the mean of its divisors is an integer number (7620680184).

Almost surely, 2^20321813822 is an apocalyptic number.

20321813822 is a deficient number, since it is larger than the sum of its proper divisors (10160906914).

20321813822 is a wasteful number, since it uses less digits than its factorization.

20321813822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10160906913.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 20321813822 in words is "twenty billion, three hundred twenty-one million, eight hundred thirteen thousand, eight hundred twenty-two".