120220434557 has 2 divisors, whose sum is σ = 120220434558. Its totient is φ = 120220434556.

The previous prime is 120220434527. The next prime is 120220434577. The reversal of 120220434557 is 755434022021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100036833796 + 20183600761 = 316286^2 + 142069^2 .

It is a cyclic number.

It is not a de Polignac number, because 120220434557 - 2³⁴ = 103040565373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120220434527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110217278 + 60110217279.

It is an arithmetic number, because the mean of its divisors is an integer number (60110217279).

Almost surely, 2^120220434557 is an apocalyptic number.

It is an amenable number.

120220434557 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220434557 is an equidigital number, since it uses as much as digits as its factorization.

120220434557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 35.

Adding to 120220434557 its reverse (755434022021), we get a palindrome (875654456578).

The spelling of 120220434557 in words is "one hundred twenty billion, two hundred twenty million, four hundred thirty-four thousand, five hundred fifty-seven".