42211005121 has 2 divisors, whose sum is σ = 42211005122. Its totient is φ = 42211005120.

The previous prime is 42211005107. The next prime is 42211005143. The reversal of 42211005121 is 12150011224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37581699600 + 4629305521 = 193860^2 + 68039^2 .

It is a cyclic number.

It is not a de Polignac number, because 42211005121 - 2¹⁹ = 42210480833 is a prime.

It is not a weakly prime, because it can be changed into another prime (42211005101) 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, 21105502560 + 21105502561.

It is an arithmetic number, because the mean of its divisors is an integer number (21105502561).

Almost surely, 2^42211005121 is an apocalyptic number.

It is an amenable number.

42211005121 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211005121 is an equidigital number, since it uses as much as digits as its factorization.

42211005121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 42211005121 its reverse (12150011224), we get a palindrome (54361016345).

The spelling of 42211005121 in words is "forty-two billion, two hundred eleven million, five thousand, one hundred twenty-one".