40334121221 has 2 divisors, whose sum is σ = 40334121222. Its totient is φ = 40334121220.

The previous prime is 40334121187. The next prime is 40334121229. The reversal of 40334121221 is 12212143304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28143753121 + 12190368100 = 167761^2 + 110410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40334121221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40334121229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20167060610 + 20167060611.

It is an arithmetic number, because the mean of its divisors is an integer number (20167060611).

Almost surely, 2^40334121221 is an apocalyptic number.

It is an amenable number.

40334121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40334121221 is an equidigital number, since it uses as much as digits as its factorization.

40334121221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 40334121221 its reverse (12212143304), we get a palindrome (52546264525).

The spelling of 40334121221 in words is "forty billion, three hundred thirty-four million, one hundred twenty-one thousand, two hundred twenty-one".