20422322231 has 2 divisors, whose sum is σ = 20422322232. Its totient is φ = 20422322230.

The previous prime is 20422322201. The next prime is 20422322251. The reversal of 20422322231 is 13222322402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20422322231 is a prime.

It is a super-2 number, since 2×20422322231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20422322197 and 20422322206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20422322201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211161115 + 10211161116.

It is an arithmetic number, because the mean of its divisors is an integer number (10211161116).

Almost surely, 2^20422322231 is an apocalyptic number.

20422322231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422322231 is an equidigital number, since it uses as much as digits as its factorization.

20422322231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20422322231 its reverse (13222322402), we get a palindrome (33644644633).

The spelling of 20422322231 in words is "twenty billion, four hundred twenty-two million, three hundred twenty-two thousand, two hundred thirty-one".