20321010422 has 4 divisors (see below), whose sum is σ = 30481515636. Its totient is φ = 10160505210.

The previous prime is 20321010343. The next prime is 20321010443. The reversal of 20321010422 is 22401012302.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20321010422.

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, 5080252604 + ... + 5080252607.

It is an arithmetic number, because the mean of its divisors is an integer number (7620378909).

Almost surely, 2^20321010422 is an apocalyptic number.

20321010422 is a deficient number, since it is larger than the sum of its proper divisors (10160505214).

20321010422 is a wasteful number, since it uses less digits than its factorization.

20321010422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10160505213.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20321010422 its reverse (22401012302), we get a palindrome (42722022724).

The spelling of 20321010422 in words is "twenty billion, three hundred twenty-one million, ten thousand, four hundred twenty-two".