121621063 has 2 divisors, whose sum is σ = 121621064. Its totient is φ = 121621062.

The previous prime is 121621051. The next prime is 121621067. The reversal of 121621063 is 360126121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121621063 - 2²⁵ = 88066631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121621067) 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, 60810531 + 60810532.

It is an arithmetic number, because the mean of its divisors is an integer number (60810532).

Almost surely, 2^121621063 is an apocalyptic number.

121621063 is a deficient number, since it is larger than the sum of its proper divisors (1).

121621063 is an equidigital number, since it uses as much as digits as its factorization.

121621063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121621063 is about 11028.1940044597. The cubic root of 121621063 is about 495.4535352865.

Adding to 121621063 its reverse (360126121), we get a palindrome (481747184).

It can be divided in two parts, 12162 and 1063, that added together give a square (13225 = 115²).

The spelling of 121621063 in words is "one hundred twenty-one million, six hundred twenty-one thousand, sixty-three".