64116121 has 4 divisors (see below), whose sum is σ = 64132992. Its totient is φ = 64099252.

The previous prime is 64116109. The next prime is 64116133. The reversal of 64116121 is 12161146.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12161146 = 2 ⋅6080573.

It is an interprime number because it is at equal distance from previous prime (64116109) and next prime (64116133).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64116121 is a prime.

It is a super-2 number, since 2×64116121² = 8221753944173282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64116092 and 64116101.

It is not an unprimeable number, because it can be changed into a prime (64116181) 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, 240 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (16033248).

Almost surely, 2^64116121 is an apocalyptic number.

It is an amenable number.

64116121 is a deficient number, since it is larger than the sum of its proper divisors (16871).

64116121 is a wasteful number, since it uses less digits than its factorization.

64116121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16870.

The product of its digits is 288, while the sum is 22.

The square root of 64116121 is about 8007.2542734698. The cubic root of 64116121 is about 400.2417725856.

Adding to 64116121 its reverse (12161146), we get a palindrome (76277267).

The spelling of 64116121 in words is "sixty-four million, one hundred sixteen thousand, one hundred twenty-one".