30121220230 has 32 divisors (see below), whose sum is σ = 55748088000. Its totient is φ = 11712684672.

The previous prime is 30121220209. The next prime is 30121220231. The reversal of 30121220230 is 3202212103.

It is a super-2 number, since 2×30121220230² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121220231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202930 + ... + 318469.

It is an arithmetic number, because the mean of its divisors is an integer number (1742127750).

Almost surely, 2^30121220230 is an apocalyptic number.

30121220230 is a deficient number, since it is larger than the sum of its proper divisors (25626867770).

30121220230 is a wasteful number, since it uses less digits than its factorization.

30121220230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521568.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30121220230 its reverse (3202212103), we get a palindrome (33323432333).

The spelling of 30121220230 in words is "thirty billion, one hundred twenty-one million, two hundred twenty thousand, two hundred thirty".