220342961 has 2 divisors, whose sum is σ = 220342962. Its totient is φ = 220342960.

The previous prime is 220342901. The next prime is 220342987. The reversal of 220342961 is 169243022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219958561 + 384400 = 14831^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 220342961 - 2¹⁰ = 220341937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220342901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110171480 + 110171481.

It is an arithmetic number, because the mean of its divisors is an integer number (110171481).

Almost surely, 2^220342961 is an apocalyptic number.

It is an amenable number.

220342961 is a deficient number, since it is larger than the sum of its proper divisors (1).

220342961 is an equidigital number, since it uses as much as digits as its factorization.

220342961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 220342961 is about 14843.9536849183. The cubic root of 220342961 is about 603.9946063653.

Adding to 220342961 its reverse (169243022), we get a palindrome (389585983).

The spelling of 220342961 in words is "two hundred twenty million, three hundred forty-two thousand, nine hundred sixty-one".