42211007081 has 2 divisors, whose sum is σ = 42211007082. Its totient is φ = 42211007080.

The previous prime is 42211007057. The next prime is 42211007143. The reversal of 42211007081 is 18070011224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41387833600 + 823173481 = 203440^2 + 28691^2 .

It is a cyclic number.

It is not a de Polignac number, because 42211007081 - 2⁶ = 42211007017 is a prime.

It is a super-2 number, since 2×42211007081² (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 42211007081.

It is not a weakly prime, because it can be changed into another prime (42211001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105503540 + 21105503541.

It is an arithmetic number, because the mean of its divisors is an integer number (21105503541).

Almost surely, 2^42211007081 is an apocalyptic number.

It is an amenable number.

42211007081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211007081 is an equidigital number, since it uses as much as digits as its factorization.

42211007081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 42211007081 in words is "forty-two billion, two hundred eleven million, seven thousand, eighty-one".