122220221131 has 2 divisors, whose sum is σ = 122220221132. Its totient is φ = 122220221130.

The previous prime is 122220221093. The next prime is 122220221173. The reversal of 122220221131 is 131122022221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122220221131 is a prime.

It is a super-2 number, since 2×122220221131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122220221099 and 122220221108.

It is not a weakly prime, because it can be changed into another prime (122220221231) 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, 61110110565 + 61110110566.

It is an arithmetic number, because the mean of its divisors is an integer number (61110110566).

Almost surely, 2^122220221131 is an apocalyptic number.

122220221131 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220221131 is an equidigital number, since it uses as much as digits as its factorization.

122220221131 is an odious number, because the sum of its binary digits is odd.

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

Adding to 122220221131 its reverse (131122022221), we get a palindrome (253342243352).

The spelling of 122220221131 in words is "one hundred twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, one hundred thirty-one".