522100121 has 2 divisors, whose sum is σ = 522100122. Its totient is φ = 522100120.

The previous prime is 522100091. The next prime is 522100157. The reversal of 522100121 is 121001225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300536896 + 221563225 = 17336^2 + 14885^2 .

It is a cyclic number.

It is not a de Polignac number, because 522100121 - 2⁶ = 522100057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 522100096 and 522100105.

It is not a weakly prime, because it can be changed into another prime (522100421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261050060 + 261050061.

It is an arithmetic number, because the mean of its divisors is an integer number (261050061).

Almost surely, 2^522100121 is an apocalyptic number.

It is an amenable number.

522100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

522100121 is an equidigital number, since it uses as much as digits as its factorization.

522100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 522100121 is about 22849.5103010984. The cubic root of 522100121 is about 805.2262630570.

Adding to 522100121 its reverse (121001225), we get a palindrome (643101346).

The spelling of 522100121 in words is "five hundred twenty-two million, one hundred thousand, one hundred twenty-one".