121204001 has 2 divisors, whose sum is σ = 121204002. Its totient is φ = 121204000.

The previous prime is 121203991. The next prime is 121204019. The reversal of 121204001 is 100402121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 40653376 = 8975^2 + 6376^2 .

It is a cyclic number.

It is not a de Polignac number, because 121204001 - 2²⁶ = 54095137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121204051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60602000 + 60602001.

It is an arithmetic number, because the mean of its divisors is an integer number (60602001).

Almost surely, 2^121204001 is an apocalyptic number.

It is an amenable number.

121204001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121204001 is an equidigital number, since it uses as much as digits as its factorization.

121204001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121204001 is about 11009.2688676406. The cubic root of 121204001 is about 494.8865515610.

Adding to 121204001 its reverse (100402121), we get a palindrome (221606122).

The spelling of 121204001 in words is "one hundred twenty-one million, two hundred four thousand, one".