121305001 has 2 divisors, whose sum is σ = 121305002. Its totient is φ = 121305000.

The previous prime is 121304993. The next prime is 121305029. The reversal of 121305001 is 100503121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 35093776 = 9285^2 + 5924^2 .

It is a cyclic number.

It is not a de Polignac number, because 121305001 - 2³ = 121304993 is a prime.

It is a super-2 number, since 2×121305001² = 29429806535220002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121305091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60652500 + 60652501.

It is an arithmetic number, because the mean of its divisors is an integer number (60652501).

Almost surely, 2^121305001 is an apocalyptic number.

It is an amenable number.

121305001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121305001 is an equidigital number, since it uses as much as digits as its factorization.

121305001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 121305001 is about 11013.8549563720. The cubic root of 121305001 is about 495.0239773441.

Adding to 121305001 its reverse (100503121), we get a palindrome (221808122).

The spelling of 121305001 in words is "one hundred twenty-one million, three hundred five thousand, one".