10221203121 has 16 divisors (see below), whose sum is σ = 14733268800. Its totient is φ = 6281022528.

The previous prime is 10221203119. The next prime is 10221203183. The reversal of 10221203121 is 12130212201.

10221203121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10221203121 - 2¹ = 10221203119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221203121.

It is not an unprimeable number, because it can be changed into a prime (10221203101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2421126 + ... + 2425343.

It is an arithmetic number, because the mean of its divisors is an integer number (920829300).

Almost surely, 2^10221203121 is an apocalyptic number.

It is an amenable number.

10221203121 is a deficient number, since it is larger than the sum of its proper divisors (4512065679).

10221203121 is a wasteful number, since it uses less digits than its factorization.

10221203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846528.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10221203121 its reverse (12130212201), we get a palindrome (22351415322).

The spelling of 10221203121 in words is "ten billion, two hundred twenty-one million, two hundred three thousand, one hundred twenty-one".