650122121 has 16 divisors (see below), whose sum is σ = 722779200. Its totient is φ = 579768000.

The previous prime is 650122097. The next prime is 650122133. The reversal of 650122121 is 121221056.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650122121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 650122093 and 650122102.

It is not an unprimeable number, because it can be changed into a prime (650122141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454235 + ... + 455663.

It is an arithmetic number, because the mean of its divisors is an integer number (45173700).

Almost surely, 2^650122121 is an apocalyptic number.

It is an amenable number.

650122121 is a deficient number, since it is larger than the sum of its proper divisors (72657079).

650122121 is a wasteful number, since it uses less digits than its factorization.

650122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 650122121 is about 25497.4924453367. The cubic root of 650122121 is about 866.2933511673.

Adding to 650122121 its reverse (121221056), we get a palindrome (771343177).

The spelling of 650122121 in words is "six hundred fifty million, one hundred twenty-two thousand, one hundred twenty-one".