42211007161 has 2 divisors, whose sum is σ = 42211007162. Its totient is φ = 42211007160.

The previous prime is 42211007143. The next prime is 42211007207. The reversal of 42211007161 is 16170011224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31357326400 + 10853680761 = 177080^2 + 104181^2 .

It is a cyclic number.

It is not a de Polignac number, because 42211007161 - 2¹⁷ = 42210876089 is a prime.

It is not a weakly prime, because it can be changed into another prime (42211007561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105503580 + 21105503581.

It is an arithmetic number, because the mean of its divisors is an integer number (21105503581).

Almost surely, 2^42211007161 is an apocalyptic number.

It is an amenable number.

42211007161 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211007161 is an equidigital number, since it uses as much as digits as its factorization.

42211007161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 42211007161 its reverse (16170011224), we get a palindrome (58381018385).

The spelling of 42211007161 in words is "forty-two billion, two hundred eleven million, seven thousand, one hundred sixty-one".