61116121 has 8 divisors (see below), whose sum is σ = 68091264. Its totient is φ = 54377520.

The previous prime is 61116113. The next prime is 61116131. The reversal of 61116121 is 12161116.

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

It is a cyclic number.

It is not a de Polignac number, because 61116121 - 2³ = 61116113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61116101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58590 + ... + 59623.

It is an arithmetic number, because the mean of its divisors is an integer number (8511408).

Almost surely, 2^61116121 is an apocalyptic number.

It is an amenable number.

61116121 is a deficient number, since it is larger than the sum of its proper divisors (6975143).

61116121 is a wasteful number, since it uses less digits than its factorization.

61116121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118271.

The product of its digits is 72, while the sum is 19.

The square root of 61116121 is about 7817.6800267087. The cubic root of 61116121 is about 393.8993468571.

Adding to 61116121 its reverse (12161116), we get a palindrome (73277237).

The spelling of 61116121 in words is "sixty-one million, one hundred sixteen thousand, one hundred twenty-one".