20220131111 has 2 divisors, whose sum is σ = 20220131112. Its totient is φ = 20220131110.

The previous prime is 20220131047. The next prime is 20220131117. The reversal of 20220131111 is 11113102202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20220131111 - 2⁶ = 20220131047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220131117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110065555 + 10110065556.

It is an arithmetic number, because the mean of its divisors is an integer number (10110065556).

Almost surely, 2^20220131111 is an apocalyptic number.

20220131111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220131111 is an equidigital number, since it uses as much as digits as its factorization.

20220131111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20220131111 its reverse (11113102202), we get a palindrome (31333233313).

The spelling of 20220131111 in words is "twenty billion, two hundred twenty million, one hundred thirty-one thousand, one hundred eleven".