121404001 has 2 divisors, whose sum is σ = 121404002. Its totient is φ = 121404000.

The previous prime is 121403983. The next prime is 121404011. The reversal of 121404001 is 100404121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110355025 + 11048976 = 10505^2 + 3324^2 .

It is a cyclic number.

It is not a de Polignac number, because 121404001 - 2¹⁹ = 120879713 is a prime.

It is not a weakly prime, because it can be changed into another prime (121404011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60702000 + 60702001.

It is an arithmetic number, because the mean of its divisors is an integer number (60702001).

Almost surely, 2^121404001 is an apocalyptic number.

It is an amenable number.

121404001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121404001 is an equidigital number, since it uses as much as digits as its factorization.

121404001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121404001 is about 11018.3483789541. The cubic root of 121404001 is about 495.1586078138.

Adding to 121404001 its reverse (100404121), we get a palindrome (221808122).

The spelling of 121404001 in words is "one hundred twenty-one million, four hundred four thousand, one".