64016121 has 32 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 37767744.

The previous prime is 64016119. The next prime is 64016143. The reversal of 64016121 is 12161046.

It is not a de Polignac number, because 64016121 - 2¹ = 64016119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64016191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98620 + ... + 99266.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^64016121 is an apocalyptic number.

It is an amenable number.

64016121 is a deficient number, since it is larger than the sum of its proper divisors (31784199).

64016121 is a wasteful number, since it uses less digits than its factorization.

64016121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 64016121 is about 8001.0074990591. The cubic root of 64016121 is about 400.0335825971.

Adding to 64016121 its reverse (12161046), we get a palindrome (76177167).

It can be divided in two parts, 640 and 16121, that added together give a palindrome (16761).

The spelling of 64016121 in words is "sixty-four million, sixteen thousand, one hundred twenty-one".