121033109 has 2 divisors, whose sum is σ = 121033110. Its totient is φ = 121033108.

The previous prime is 121033091. The next prime is 121033111. The reversal of 121033109 is 901330121.

Together with previous prime (121033091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120780100 + 253009 = 10990^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 121033109 - 2⁸ = 121032853 is a prime.

Together with 121033111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121033139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516554 + 60516555.

It is an arithmetic number, because the mean of its divisors is an integer number (60516555).

Almost surely, 2^121033109 is an apocalyptic number.

It is an amenable number.

121033109 is a deficient number, since it is larger than the sum of its proper divisors (1).

121033109 is an equidigital number, since it uses as much as digits as its factorization.

121033109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 121033109 is about 11001.5048516101. The cubic root of 121033109 is about 494.6538531610.

The spelling of 121033109 in words is "one hundred twenty-one million, thirty-three thousand, one hundred nine".