30121223115 has 16 divisors (see below), whose sum is σ = 48210870816. Its totient is φ = 16059014400.

The previous prime is 30121223113. The next prime is 30121223117. The reversal of 30121223115 is 51132212103.

It is an interprime number because it is at equal distance from previous prime (30121223113) and next prime (30121223117).

It is not a de Polignac number, because 30121223115 - 2¹ = 30121223113 is a prime.

It is a super-2 number, since 2×30121223115² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30121223091 and 30121223100.

It is not an unprimeable number, because it can be changed into a prime (30121223113) 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 15 ways as a sum of consecutive naturals, for example, 308026 + ... + 393855.

It is an arithmetic number, because the mean of its divisors is an integer number (3013179426).

Almost surely, 2^30121223115 is an apocalyptic number.

30121223115 is a deficient number, since it is larger than the sum of its proper divisors (18089647701).

30121223115 is a wasteful number, since it uses less digits than its factorization.

30121223115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704750.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 30121223115 its reverse (51132212103), we get a palindrome (81253435218).

The spelling of 30121223115 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred fifteen".