20121130230 has 16 divisors (see below), whose sum is σ = 48290712624. Its totient is φ = 5365634720.

The previous prime is 20121130219. The next prime is 20121130261. The reversal of 20121130230 is 3203112102.

It is a super-3 number, since 3×20121130230³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 335352141 + ... + 335352200.

It is an arithmetic number, because the mean of its divisors is an integer number (3018169539).

Almost surely, 2^20121130230 is an apocalyptic number.

20121130230 is an abundant number, since it is smaller than the sum of its proper divisors (28169582394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121130230 is a wasteful number, since it uses less digits than its factorization.

20121130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670704351.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20121130230 its reverse (3203112102), we get a palindrome (23324242332).

The spelling of 20121130230 in words is "twenty billion, one hundred twenty-one million, one hundred thirty thousand, two hundred thirty".