64121201 has 4 divisors (see below), whose sum is σ = 64479600. Its totient is φ = 63762804.

The previous prime is 64121173. The next prime is 64121203. The reversal of 64121201 is 10212146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64121201 - 2⁶ = 64121137 is a prime.

It is a super-2 number, since 2×64121201² = 8223056835364802, which contains 22 as substring.

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 64121201.

It is not an unprimeable number, because it can be changed into a prime (64121203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178931 + ... + 179288.

It is an arithmetic number, because the mean of its divisors is an integer number (16119900).

Almost surely, 2^64121201 is an apocalyptic number.

It is an amenable number.

64121201 is a deficient number, since it is larger than the sum of its proper divisors (358399).

64121201 is a wasteful number, since it uses less digits than its factorization.

64121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358398.

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

The square root of 64121201 is about 8007.5714795436. The cubic root of 64121201 is about 400.2523428576.

Adding to 64121201 its reverse (10212146), we get a palindrome (74333347).

The spelling of 64121201 in words is "sixty-four million, one hundred twenty-one thousand, two hundred one".