11202121201 has 2 divisors, whose sum is σ = 11202121202.
Its totient is φ = 11202121200.
The previous prime is 11202121187. The next prime is 11202121211. The reversal of 11202121201 is 10212120211.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 9516197601 + 1685923600 = 97551^2 + 41060^2
It is a cyclic number.
It is not a de Polignac number, because 11202121201 - 25 = 11202121169 is a prime.
It is not a weakly prime, because it can be changed into another prime (11202121211) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601060600 + 5601060601.
It is an arithmetic number, because the mean of its divisors is an integer number (5601060601).
Almost surely, 211202121201 is an apocalyptic number.
It is an amenable number.
11202121201 is a deficient number, since it is larger than the sum of its proper divisors (1).
11202121201 is an equidigital number, since it uses as much as digits as its factorization.
11202121201 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 11202121201 its reverse (10212120211), we get a palindrome (21414241412).
The spelling of 11202121201 in words is "eleven billion, two hundred two million, one hundred twenty-one thousand, two hundred one".