121863065 has 8 divisors (see below), whose sum is σ = 147684168. Its totient is φ = 96524800.

The previous prime is 121863043. The next prime is 121863067. The reversal of 121863065 is 560368121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29626249 + 92236816 = 5443^2 + 9604^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-121863065 is a prime.

It is a super-2 number, since 2×121863065² = 29701213222388450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121863067) 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, 120152 + ... + 121161.

It is an arithmetic number, because the mean of its divisors is an integer number (18460521).

Almost surely, 2^121863065 is an apocalyptic number.

It is an amenable number.

121863065 is a deficient number, since it is larger than the sum of its proper divisors (25821103).

121863065 is a wasteful number, since it uses less digits than its factorization.

121863065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241419.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 121863065 is about 11039.1605206193. The cubic root of 121863065 is about 495.7819359352.

It can be divided in two parts, 12186 and 3065, that added together give a palindrome (15251).

The spelling of 121863065 in words is "one hundred twenty-one million, eight hundred sixty-three thousand, sixty-five".