121230003121 has 2 divisors, whose sum is σ = 121230003122. Its totient is φ = 121230003120.

The previous prime is 121230003061. The next prime is 121230003151. The reversal of 121230003121 is 121300032121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85626464400 + 35603538721 = 292620^2 + 188689^2 .

It is a cyclic number.

It is not a de Polignac number, because 121230003121 - 2¹⁵ = 121229970353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121230003095 and 121230003104.

It is not a weakly prime, because it can be changed into another prime (121230003151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615001560 + 60615001561.

It is an arithmetic number, because the mean of its divisors is an integer number (60615001561).

Almost surely, 2^121230003121 is an apocalyptic number.

It is an amenable number.

121230003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230003121 is an equidigital number, since it uses as much as digits as its factorization.

121230003121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121230003121 its reverse (121300032121), we get a palindrome (242530035242).

The spelling of 121230003121 in words is "one hundred twenty-one billion, two hundred thirty million, three thousand, one hundred twenty-one".