10320202121 has 8 divisors (see below), whose sum is σ = 10932694920. Its totient is φ = 9708311808.

The previous prime is 10320202099. The next prime is 10320202133. The reversal of 10320202121 is 12120202301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5358972025 + 4961230096 = 73205^2 + 70436^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10320202121 - 2¹⁰ = 10320201097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10320202096 and 10320202105.

It is not an unprimeable number, because it can be changed into a prime (10320202141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115106 + ... + 184091.

It is an arithmetic number, because the mean of its divisors is an integer number (1366586865).

Almost surely, 2^10320202121 is an apocalyptic number.

It is an amenable number.

10320202121 is a deficient number, since it is larger than the sum of its proper divisors (612492799).

10320202121 is a wasteful number, since it uses less digits than its factorization.

10320202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301243.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10320202121 its reverse (12120202301), we get a palindrome (22440404422).

The spelling of 10320202121 in words is "ten billion, three hundred twenty million, two hundred two thousand, one hundred twenty-one".