20322111421 has 4 divisors (see below), whose sum is σ = 20324228512. Its totient is φ = 20319994332.

The previous prime is 20322111379. The next prime is 20322111431. The reversal of 20322111421 is 12411122302.

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 a cyclic number.

It is not a de Polignac number, because 20322111421 - 2⁹ = 20322110909 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 (20322111431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044081 + ... + 1063366.

It is an arithmetic number, because the mean of its divisors is an integer number (5081057128).

Almost surely, 2^20322111421 is an apocalyptic number.

It is an amenable number.

20322111421 is a deficient number, since it is larger than the sum of its proper divisors (2117091).

20322111421 is an equidigital number, since it uses as much as digits as its factorization.

20322111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117090.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20322111421 its reverse (12411122302), we get a palindrome (32733233723).

The spelling of 20322111421 in words is "twenty billion, three hundred twenty-two million, one hundred eleven thousand, four hundred twenty-one".