11211000201121 has 4 divisors (see below), whose sum is σ = 12812571658432. Its totient is φ = 9609428743812.

The previous prime is 11211000201113. The next prime is 11211000201161. The reversal of 11211000201121 is 12110200011211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11211000201121 - 2³ = 11211000201113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211000201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800785728645 + ... + 800785728658.

It is an arithmetic number, because the mean of its divisors is an integer number (3203142914608).

Almost surely, 2^{11211000201121} is an apocalyptic number.

It is an amenable number.

11211000201121 is a deficient number, since it is larger than the sum of its proper divisors (1601571457311).

11211000201121 is an equidigital number, since it uses as much as digits as its factorization.

11211000201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601571457310.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11211000201121 its reverse (12110200011211), we get a palindrome (23321200212332).

The spelling of 11211000201121 in words is "eleven trillion, two hundred eleven billion, two hundred one thousand, one hundred twenty-one".