121304401 has 4 divisors (see below), whose sum is σ = 128439972. Its totient is φ = 114168832.

The previous prime is 121304399. The next prime is 121304411. The reversal of 121304401 is 104403121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104403121 = 47 ⋅2221343.

It can be written as a sum of positive squares in 2 ways, for example, as 85544001 + 35760400 = 9249^2 + 5980^2 .

It is a cyclic number.

It is not a de Polignac number, because 121304401 - 2¹ = 121304399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121304411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567760 + ... + 3567793.

It is an arithmetic number, because the mean of its divisors is an integer number (32109993).

Almost surely, 2^121304401 is an apocalyptic number.

It is an amenable number.

121304401 is a deficient number, since it is larger than the sum of its proper divisors (7135571).

121304401 is an equidigital number, since it uses as much as digits as its factorization.

121304401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135570.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121304401 is about 11013.8277179190. The cubic root of 121304401 is about 495.0231611786.

Adding to 121304401 its reverse (104403121), we get a palindrome (225707522).

The spelling of 121304401 in words is "one hundred twenty-one million, three hundred four thousand, four hundred one".