30331221025 has 12 divisors (see below), whose sum is σ = 42983673472. Its totient is φ = 20798551440.

The previous prime is 30331221013. The next prime is 30331221029. The reversal of 30331221025 is 52012213303.

It is not a de Polignac number, because 30331221025 - 2¹¹ = 30331218977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30331220987 and 30331221005.

It is not an unprimeable number, because it can be changed into a prime (30331221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86660457 + ... + 86660806.

Almost surely, 2^30331221025 is an apocalyptic number.

30331221025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30331221025 is a deficient number, since it is larger than the sum of its proper divisors (12652452447).

30331221025 is a wasteful number, since it uses less digits than its factorization.

30331221025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173321280 (or 173321275 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 30331221025 its reverse (52012213303), we get a palindrome (82343434328).

The spelling of 30331221025 in words is "thirty billion, three hundred thirty-one million, two hundred twenty-one thousand, twenty-five".