20022131911 has 2 divisors, whose sum is σ = 20022131912. Its totient is φ = 20022131910.

The previous prime is 20022131903. The next prime is 20022131917. The reversal of 20022131911 is 11913122002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20022131911 - 2³ = 20022131903 is a prime.

It is a super-2 number, since 2×20022131911² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022131917) 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 as a sum of consecutive naturals, namely, 10011065955 + 10011065956.

It is an arithmetic number, because the mean of its divisors is an integer number (10011065956).

Almost surely, 2^20022131911 is an apocalyptic number.

20022131911 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022131911 is an equidigital number, since it uses as much as digits as its factorization.

20022131911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 20022131911 its reverse (11913122002), we get a palindrome (31935253913).

The spelling of 20022131911 in words is "twenty billion, twenty-two million, one hundred thirty-one thousand, nine hundred eleven".