121965205 has 8 divisors (see below), whose sum is σ = 152721792. Its totient is φ = 93329808.

The previous prime is 121965203. The next prime is 121965211. The reversal of 121965205 is 502569121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121965205 - 2¹ = 121965203 is a prime.

It is a super-2 number, since 2×121965205² = 29751022461384050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121965203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530169 + ... + 530398.

It is an arithmetic number, because the mean of its divisors is an integer number (19090224).

Almost surely, 2^121965205 is an apocalyptic number.

It is an amenable number.

121965205 is a deficient number, since it is larger than the sum of its proper divisors (30756587).

121965205 is a wasteful number, since it uses less digits than its factorization.

121965205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060595.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 121965205 is about 11043.7858092232. The cubic root of 121965205 is about 495.9204111046.

The spelling of 121965205 in words is "one hundred twenty-one million, nine hundred sixty-five thousand, two hundred five".