11212202221211 has 4 divisors (see below), whose sum is σ = 11270296533432. Its totient is φ = 11154107908992.

The previous prime is 11212202221183. The next prime is 11212202221249. The reversal of 11212202221211 is 11212220221211.

11212202221211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11212202221211 - 2⁶ = 11212202221147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212202221111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29047155821 + ... + 29047156206.

It is an arithmetic number, because the mean of its divisors is an integer number (2817574133358).

Almost surely, 2^{11212202221211} is an apocalyptic number.

11212202221211 is a deficient number, since it is larger than the sum of its proper divisors (58094312221).

11212202221211 is an equidigital number, since it uses as much as digits as its factorization.

11212202221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58094312220.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11212202221211 its reverse (11212220221211), we get a palindrome (22424422442422).

The spelling of 11212202221211 in words is "eleven trillion, two hundred twelve billion, two hundred two million, two hundred twenty-one thousand, two hundred eleven".