30221512 has 32 divisors (see below), whose sum is σ = 60273720. Its totient is φ = 14156800.

The previous prime is 30221507. The next prime is 30221537. The reversal of 30221512 is 21512203.

It can be written as a sum of positive squares in 4 ways, for example, as 27311076 + 2910436 = 5226^2 + 1706^2 .

It is a super-2 number, since 2×30221512² = 1826679575132288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42762 + ... + 43462.

Almost surely, 2^30221512 is an apocalyptic number.

It is an amenable number.

30221512 is a deficient number, since it is larger than the sum of its proper divisors (30052208).

30221512 is a wasteful number, since it uses less digits than its factorization.

30221512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30221512 is about 5497.4095717892. The cubic root of 30221512 is about 311.4861418773.

Adding to 30221512 its reverse (21512203), we get a palindrome (51733715).

The spelling of 30221512 in words is "thirty million, two hundred twenty-one thousand, five hundred twelve".