201220121230 has 64 divisors (see below), whose sum is σ = 382886300160. Its totient is φ = 76029964416.

The previous prime is 201220121177. The next prime is 201220121287. The reversal of 201220121230 is 32121022102.

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, 2438629 + ... + 2519791.

It is an arithmetic number, because the mean of its divisors is an integer number (5982598440).

Almost surely, 2^201220121230 is an apocalyptic number.

201220121230 is a deficient number, since it is larger than the sum of its proper divisors (181666178930).

201220121230 is a wasteful number, since it uses less digits than its factorization.

201220121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81385.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 201220121230 its reverse (32121022102), we get a palindrome (233341143332).

The spelling of 201220121230 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred thirty".