120203031221 has 32 divisors (see below), whose sum is σ = 149167189248. Its totient is φ = 94319147520.

The previous prime is 120203031217. The next prime is 120203031259. The reversal of 120203031221 is 122130302021.

It is not a de Polignac number, because 120203031221 - 2² = 120203031217 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120203031221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120203031211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31195331 + ... + 31199183.

It is an arithmetic number, because the mean of its divisors is an integer number (4661474664).

Almost surely, 2^120203031221 is an apocalyptic number.

It is an amenable number.

120203031221 is a deficient number, since it is larger than the sum of its proper divisors (28964158027).

120203031221 is a wasteful number, since it uses less digits than its factorization.

120203031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 120203031221 its reverse (122130302021), we get a palindrome (242333333242).

The spelling of 120203031221 in words is "one hundred twenty billion, two hundred three million, thirty-one thousand, two hundred twenty-one".