121406320063 has 16 divisors (see below), whose sum is σ = 147251200320. Its totient is φ = 97714999296.

The previous prime is 121406320051. The next prime is 121406320067. The reversal of 121406320063 is 360023604121.

It is a cyclic number.

It is not a de Polignac number, because 121406320063 - 2⁵ = 121406320031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121406320067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126558 + ... + 1229611.

It is an arithmetic number, because the mean of its divisors is an integer number (9203200020).

Almost surely, 2^121406320063 is an apocalyptic number.

121406320063 is a deficient number, since it is larger than the sum of its proper divisors (25844880257).

121406320063 is a wasteful number, since it uses less digits than its factorization.

121406320063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356626.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 121406320063 its reverse (360023604121), we get a palindrome (481429924184).

The spelling of 121406320063 in words is "one hundred twenty-one billion, four hundred six million, three hundred twenty thousand, sixty-three".