42221632771 has 2 divisors, whose sum is σ = 42221632772. Its totient is φ = 42221632770.

The previous prime is 42221632757. The next prime is 42221632823. The reversal of 42221632771 is 17723612224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42221632771 - 2¹¹ = 42221630723 is a prime.

It is a super-2 number, since 2×42221632771² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42221632771.

It is not a weakly prime, because it can be changed into another prime (42221632711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21110816385 + 21110816386.

It is an arithmetic number, because the mean of its divisors is an integer number (21110816386).

Almost surely, 2^42221632771 is an apocalyptic number.

42221632771 is a deficient number, since it is larger than the sum of its proper divisors (1).

42221632771 is an equidigital number, since it uses as much as digits as its factorization.

42221632771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The spelling of 42221632771 in words is "forty-two billion, two hundred twenty-one million, six hundred thirty-two thousand, seven hundred seventy-one".