4231120201221 has 16 divisors (see below), whose sum is σ = 5823986982464. Its totient is φ = 2730290125824.

The previous prime is 4231120201181. The next prime is 4231120201223. The reversal of 4231120201221 is 1221020211324.

It is a happy number.

It is not a de Polignac number, because 4231120201221 - 2⁹ = 4231120200709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231120201223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98730391 + ... + 98773236.

It is an arithmetic number, because the mean of its divisors is an integer number (363999186404).

Almost surely, 2^{4231120201221} is an apocalyptic number.

It is an amenable number.

4231120201221 is a deficient number, since it is larger than the sum of its proper divisors (1592866781243).

4231120201221 is a wasteful number, since it uses less digits than its factorization.

4231120201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197503860.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 4231120201221 its reverse (1221020211324), we get a palindrome (5452140412545).

The spelling of 4231120201221 in words is "four trillion, two hundred thirty-one billion, one hundred twenty million, two hundred one thousand, two hundred twenty-one".