20120203221230 has 64 divisors (see below), whose sum is σ = 42249152534400. Its totient is φ = 6896015868672.

The previous prime is 20120203221227. The next prime is 20120203221379. The reversal of 20120203221230 is 3212230202102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9135572 + ... + 11122008.

It is an arithmetic number, because the mean of its divisors is an integer number (660143008350).

Almost surely, 2^{20120203221230} is an apocalyptic number.

20120203221230 is an abundant number, since it is smaller than the sum of its proper divisors (22128949313170).

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

20120203221230 is a wasteful number, since it uses less digits than its factorization.

20120203221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989418 (or 1989404 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20120203221230 its reverse (3212230202102), we get a palindrome (23332433423332).

The spelling of 20120203221230 in words is "twenty trillion, one hundred twenty billion, two hundred three million, two hundred twenty-one thousand, two hundred thirty".