64201121 has 8 divisors (see below), whose sum is σ = 66016104. Its totient is φ = 62398080.

The previous prime is 64201103. The next prime is 64201127. The reversal of 64201121 is 12110246.

64201121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 440896 + 63760225 = 664^2 + 7985^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64201121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64201121.

It is not an unprimeable number, because it can be changed into a prime (64201127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8531 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (8252013).

Almost surely, 2^64201121 is an apocalyptic number.

It is an amenable number.

64201121 is a deficient number, since it is larger than the sum of its proper divisors (1814983).

64201121 is a wasteful number, since it uses less digits than its factorization.

64201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 64201121 is about 8012.5602025819. The cubic root of 64201121 is about 400.4185639411.

Adding to 64201121 its reverse (12110246), we get a palindrome (76311367).

The spelling of 64201121 in words is "sixty-four million, two hundred one thousand, one hundred twenty-one".