11122020121211 has 4 divisors (see below), whose sum is σ = 11122110155424. Its totient is φ = 11121930087000.

The previous prime is 11122020121193. The next prime is 11122020121229. The reversal of 11122020121211 is 11212102022111.

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

It is an interprime number because it is at equal distance from previous prime (11122020121193) and next prime (11122020121229).

It is a cyclic number.

It is not a de Polignac number, because 11122020121211 - 2¹⁰ = 11122020120187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11122020121211.

It is not an unprimeable number, because it can be changed into a prime (11122020121811) 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, 44831555 + ... + 45078956.

It is an arithmetic number, because the mean of its divisors is an integer number (2780527538856).

Almost surely, 2^{11122020121211} is an apocalyptic number.

11122020121211 is a deficient number, since it is larger than the sum of its proper divisors (90034213).

11122020121211 is an equidigital number, since it uses as much as digits as its factorization.

11122020121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90034212.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11122020121211 its reverse (11212102022111), we get a palindrome (22334122143322).

The spelling of 11122020121211 in words is "eleven trillion, one hundred twenty-two billion, twenty million, one hundred twenty-one thousand, two hundred eleven".