121004281 has 2 divisors, whose sum is σ = 121004282. Its totient is φ = 121004280.

The previous prime is 121004263. The next prime is 121004309. The reversal of 121004281 is 182400121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119355625 + 1648656 = 10925^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 121004281 - 2⁹ = 121003769 is a prime.

It is a super-2 number, since 2×121004281² = 29284072040653922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121004201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60502140 + 60502141.

It is an arithmetic number, because the mean of its divisors is an integer number (60502141).

Almost surely, 2^121004281 is an apocalyptic number.

It is an amenable number.

121004281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121004281 is an equidigital number, since it uses as much as digits as its factorization.

121004281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 121004281 is about 11000.1945891880. The cubic root of 121004281 is about 494.6145773691.

The spelling of 121004281 in words is "one hundred twenty-one million, four thousand, two hundred eighty-one".