562121221 has 2 divisors, whose sum is σ = 562121222. Its totient is φ = 562121220.

The previous prime is 562121191. The next prime is 562121281. The reversal of 562121221 is 122121265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 560268900 + 1852321 = 23670^2 + 1361^2 .

It is a cyclic number.

It is not a de Polignac number, because 562121221 - 2⁷ = 562121093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 562121192 and 562121201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (562121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281060610 + 281060611.

It is an arithmetic number, because the mean of its divisors is an integer number (281060611).

Almost surely, 2^562121221 is an apocalyptic number.

It is an amenable number.

562121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

562121221 is an equidigital number, since it uses as much as digits as its factorization.

562121221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 562121221 is about 23709.0957440388. The cubic root of 562121221 is about 825.2964816250.

Adding to 562121221 its reverse (122121265), we get a palindrome (684242486).

The spelling of 562121221 in words is "five hundred sixty-two million, one hundred twenty-one thousand, two hundred twenty-one".