30121015 has 8 divisors (see below), whose sum is σ = 36174960. Its totient is φ = 24076992.

The previous prime is 30121001. The next prime is 30121043. The reversal of 30121015 is 51012103.

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 30121015 - 2⁷ = 30120887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30120986 and 30121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9276 + ... + 12094.

It is an arithmetic number, because the mean of its divisors is an integer number (4521870).

Almost surely, 2^30121015 is an apocalyptic number.

30121015 is a deficient number, since it is larger than the sum of its proper divisors (6053945).

30121015 is a wasteful number, since it uses less digits than its factorization.

30121015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 30121015 is about 5488.2615644665. The cubic root of 30121015 is about 311.1404920051.

Adding to 30121015 its reverse (51012103), we get a palindrome (81133118).

It can be divided in two parts, 301 and 21015, that added together give a square (21316 = 146²).

The spelling of 30121015 in words is "thirty million, one hundred twenty-one thousand, fifteen".