612016121 has 8 divisors (see below), whose sum is σ = 615081600. Its totient is φ = 608959120.

The previous prime is 612016117. The next prime is 612016129. The reversal of 612016121 is 121610216.

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 612016121 - 2² = 612016117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612016093 and 612016102.

It is not an unprimeable number, because it can be changed into a prime (612016129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178895 + ... + 182283.

It is an arithmetic number, because the mean of its divisors is an integer number (76885200).

Almost surely, 2^612016121 is an apocalyptic number.

It is an amenable number.

612016121 is a deficient number, since it is larger than the sum of its proper divisors (3065479).

612016121 is a wasteful number, since it uses less digits than its factorization.

612016121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4239.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 612016121 is about 24738.9595779612. The cubic root of 612016121 is about 849.0259296197.

Adding to 612016121 its reverse (121610216), we get a palindrome (733626337).

The spelling of 612016121 in words is "six hundred twelve million, sixteen thousand, one hundred twenty-one".