461220121 has 2 divisors, whose sum is σ = 461220122. Its totient is φ = 461220120.

The previous prime is 461220061. The next prime is 461220131. The reversal of 461220121 is 121022164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361000000 + 100220121 = 19000^2 + 10011^2 .

It is a cyclic number.

It is not a de Polignac number, because 461220121 - 2⁹ = 461219609 is a prime.

It is not a weakly prime, because it can be changed into another prime (461220131) 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, 230610060 + 230610061.

It is an arithmetic number, because the mean of its divisors is an integer number (230610061).

Almost surely, 2^461220121 is an apocalyptic number.

It is an amenable number.

461220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

461220121 is an equidigital number, since it uses as much as digits as its factorization.

461220121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 461220121 is about 21476.0359703554. The cubic root of 461220121 is about 772.6261715483.

Adding to 461220121 its reverse (121022164), we get a palindrome (582242285).

The spelling of 461220121 in words is "four hundred sixty-one million, two hundred twenty thousand, one hundred twenty-one".