11001200202121 has 2 divisors, whose sum is σ = 11001200202122. Its totient is φ = 11001200202120.

The previous prime is 11001200202077. The next prime is 11001200202137. The reversal of 11001200202121 is 12120200210011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10955173219600 + 46026982521 = 3309860^2 + 214539^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001200202121 - 2⁹ = 11001200201609 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001200202821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500600101060 + 5500600101061.

It is an arithmetic number, because the mean of its divisors is an integer number (5500600101061).

Almost surely, 2^{11001200202121} is an apocalyptic number.

It is an amenable number.

11001200202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001200202121 is an equidigital number, since it uses as much as digits as its factorization.

11001200202121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11001200202121 its reverse (12120200210011), we get a palindrome (23121400412132).

The spelling of 11001200202121 in words is "eleven trillion, one billion, two hundred million, two hundred two thousand, one hundred twenty-one".