30112200121 has 8 divisors (see below), whose sum is σ = 30325083464. Its totient is φ = 29899584000.

The previous prime is 30112200077. The next prime is 30112200133. The reversal of 30112200121 is 12100221103.

It can be written as a sum of positive squares in 4 ways, for example, as 17216326521 + 12895873600 = 131211^2 + 113560^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30112200121 is a prime.

It is a super-2 number, since 2×30112200121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30112200161) 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, 162121 + ... + 294121.

It is an arithmetic number, because the mean of its divisors is an integer number (3790635433).

Almost surely, 2^30112200121 is an apocalyptic number.

It is an amenable number.

30112200121 is a deficient number, since it is larger than the sum of its proper divisors (212883343).

30112200121 is a wasteful number, since it uses less digits than its factorization.

30112200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133611.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 30112200121 its reverse (12100221103), we get a palindrome (42212421224).

The spelling of 30112200121 in words is "thirty billion, one hundred twelve million, two hundred thousand, one hundred twenty-one".