42212202561 has 12 divisors (see below), whose sum is σ = 61061429520. Its totient is φ = 28100738520.

The previous prime is 42212202521. The next prime is 42212202707. The reversal of 42212202561 is 16520221224.

It is not a de Polignac number, because 42212202561 - 2¹⁸ = 42211940417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42212202521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3387591 + ... + 3400028.

It is an arithmetic number, because the mean of its divisors is an integer number (5088452460).

Almost surely, 2^42212202561 is an apocalyptic number.

It is an amenable number.

42212202561 is a deficient number, since it is larger than the sum of its proper divisors (18849226959).

42212202561 is a wasteful number, since it uses less digits than its factorization.

42212202561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788316 (or 6788313 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 42212202561 its reverse (16520221224), we get a palindrome (58732423785).

The spelling of 42212202561 in words is "forty-two billion, two hundred twelve million, two hundred two thousand, five hundred sixty-one".