121304153 has 2 divisors, whose sum is σ = 121304154. Its totient is φ = 121304152.

The previous prime is 121304123. The next prime is 121304159. The reversal of 121304153 is 351403121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121066009 + 238144 = 11003^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 121304153 - 2¹² = 121300057 is a prime.

It is not a weakly prime, because it can be changed into another prime (121304159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60652076 + 60652077.

It is an arithmetic number, because the mean of its divisors is an integer number (60652077).

Almost surely, 2^121304153 is an apocalyptic number.

It is an amenable number.

121304153 is a deficient number, since it is larger than the sum of its proper divisors (1).

121304153 is an equidigital number, since it uses as much as digits as its factorization.

121304153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 121304153 is about 11013.8164593387. The cubic root of 121304153 is about 495.0228238294.

Adding to 121304153 its reverse (351403121), we get a palindrome (472707274).

The spelling of 121304153 in words is "one hundred twenty-one million, three hundred four thousand, one hundred fifty-three".