220242131 has 2 divisors, whose sum is σ = 220242132. Its totient is φ = 220242130.

The previous prime is 220242049. The next prime is 220242149. The reversal of 220242131 is 131242022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220242131 is a prime.

It is a super-2 number, since 2×220242131² = 97013192534842322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220242161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110121065 + 110121066.

It is an arithmetic number, because the mean of its divisors is an integer number (110121066).

Almost surely, 2^220242131 is an apocalyptic number.

220242131 is a deficient number, since it is larger than the sum of its proper divisors (1).

220242131 is an equidigital number, since it uses as much as digits as its factorization.

220242131 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 17.

The square root of 220242131 is about 14840.5569639418. The cubic root of 220242131 is about 603.9024620285.

Adding to 220242131 its reverse (131242022), we get a palindrome (351484153).

The spelling of 220242131 in words is "two hundred twenty million, two hundred forty-two thousand, one hundred thirty-one".