11020202121111 has 16 divisors (see below), whose sum is σ = 15363181536000. Its totient is φ = 7013292327360.

The previous prime is 11020202121083. The next prime is 11020202121119. The reversal of 11020202121111 is 11112120202011.

It is a happy number.

It is not a de Polignac number, because 11020202121111 - 2¹⁹ = 11020201596823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020202121119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159998710 + ... + 160067571.

It is an arithmetic number, because the mean of its divisors is an integer number (960198846000).

Almost surely, 2^{11020202121111} is an apocalyptic number.

11020202121111 is a deficient number, since it is larger than the sum of its proper divisors (4342979414889).

11020202121111 is a wasteful number, since it uses less digits than its factorization.

11020202121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320066806.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11020202121111 its reverse (11112120202011), we get a palindrome (22132322323122).

The spelling of 11020202121111 in words is "eleven trillion, twenty billion, two hundred two million, one hundred twenty-one thousand, one hundred eleven".