11121211201 has 2 divisors, whose sum is σ = 11121211202. Its totient is φ = 11121211200.

The previous prime is 11121211163. The next prime is 11121211259. The reversal of 11121211201 is 10211212111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10722809601 + 398401600 = 103551^2 + 19960^2 .

It is an emirp because it is prime and its reverse (10211212111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11121211201 - 2¹⁵ = 11121178433 is a prime.

It is not a weakly prime, because it can be changed into another prime (11121211261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560605600 + 5560605601.

It is an arithmetic number, because the mean of its divisors is an integer number (5560605601).

Almost surely, 2^11121211201 is an apocalyptic number.

It is an amenable number.

11121211201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121211201 is an equidigital number, since it uses as much as digits as its factorization.

11121211201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11121211201 its reverse (10211212111), we get a palindrome (21332423312).

The spelling of 11121211201 in words is "eleven billion, one hundred twenty-one million, two hundred eleven thousand, two hundred one".