121649275 has 24 divisors (see below), whose sum is σ = 165574224. Its totient is φ = 87926400.

The previous prime is 121649243. The next prime is 121649291. The reversal of 121649275 is 572946121.

It is not a de Polignac number, because 121649275 - 2⁵ = 121649243 is a prime.

It is a super-2 number, since 2×121649275² = 29597092216051250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46297 + ... + 48853.

It is an arithmetic number, because the mean of its divisors is an integer number (6898926).

Almost surely, 2^121649275 is an apocalyptic number.

121649275 is a deficient number, since it is larger than the sum of its proper divisors (43924949).

121649275 is a wasteful number, since it uses less digits than its factorization.

121649275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 2746 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 121649275 is about 11029.4730155162. The cubic root of 121649275 is about 495.4918418488.

The spelling of 121649275 in words is "one hundred twenty-one million, six hundred forty-nine thousand, two hundred seventy-five".