121273105 has 16 divisors (see below), whose sum is σ = 153708480. Its totient is φ = 91599552.

The previous prime is 121273081. The next prime is 121273109. The reversal of 121273105 is 501372121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121273105 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121273109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28102 + ... + 32128.

It is an arithmetic number, because the mean of its divisors is an integer number (9606780).

Almost surely, 2^121273105 is an apocalyptic number.

It is an amenable number.

121273105 is a deficient number, since it is larger than the sum of its proper divisors (32435375).

121273105 is a wasteful number, since it uses less digits than its factorization.

121273105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 121273105 is about 11012.4068668026. The cubic root of 121273105 is about 494.9805862535.

The spelling of 121273105 in words is "one hundred twenty-one million, two hundred seventy-three thousand, one hundred five".