20110121332229 has 2 divisors, whose sum is σ = 20110121332230. Its totient is φ = 20110121332228.

The previous prime is 20110121332201. The next prime is 20110121332289. The reversal of 20110121332229 is 92223312101102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20096078608225 + 14042724004 = 4482865^2 + 118502^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110121332229 - 2⁸ = 20110121331973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110121332289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055060666114 + 10055060666115.

It is an arithmetic number, because the mean of its divisors is an integer number (10055060666115).

Almost surely, 2^{20110121332229} is an apocalyptic number.

It is an amenable number.

20110121332229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110121332229 is an equidigital number, since it uses as much as digits as its factorization.

20110121332229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 20110121332229 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, three hundred thirty-two thousand, two hundred twenty-nine".