30112121 has 8 divisors (see below), whose sum is σ = 33547080. Its totient is φ = 26836992.

The previous prime is 30112111. The next prime is 30112123. The reversal of 30112121 is 12121103.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 30085225 = 164^2 + 5485^2 .

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

It is not a de Polignac number, because 30112121 - 2⁶ = 30112057 is a prime.

It is a super-2 number, since 2×30112121² = 1813479662237282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30112123) 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, 39560 + ... + 40313.

It is an arithmetic number, because the mean of its divisors is an integer number (4193385).

Almost surely, 2^30112121 is an apocalyptic number.

It is an amenable number.

30112121 is a deficient number, since it is larger than the sum of its proper divisors (3434959).

30112121 is a wasteful number, since it uses less digits than its factorization.

30112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79915.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 30112121 is about 5487.4512298516. The cubic root of 30112121 is about 311.1098649279.

Adding to 30112121 its reverse (12121103), we get a palindrome (42233224).

The spelling of 30112121 in words is "thirty million, one hundred twelve thousand, one hundred twenty-one".