11010202121 has 8 divisors (see below), whose sum is σ = 11113242120. Its totient is φ = 10907260672.

The previous prime is 11010202087. The next prime is 11010202123. The reversal of 11010202121 is 12120201011.

It can be written as a sum of positive squares in 4 ways, for example, as 732297721 + 10277904400 = 27061^2 + 101380^2 .

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 11010202121 - 2¹⁸ = 11009939977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11010202123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210251 + ... + 257343.

It is an arithmetic number, because the mean of its divisors is an integer number (1389155265).

Almost surely, 2^11010202121 is an apocalyptic number.

It is an amenable number.

11010202121 is a deficient number, since it is larger than the sum of its proper divisors (103039999).

11010202121 is a wasteful number, since it uses less digits than its factorization.

11010202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49275.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11010202121 its reverse (12120201011), we get a palindrome (23130403132).

The spelling of 11010202121 in words is "eleven billion, ten million, two hundred two thousand, one hundred twenty-one".