11212022011213 has 4 divisors (see below), whose sum is σ = 11485485962748. Its totient is φ = 10938558059680.

The previous prime is 11212022011189. The next prime is 11212022011301. The reversal of 11212022011213 is 31211022021211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 480619133289 + 10731402877924 = 693267^2 + 3275882^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212022011213 - 2²¹ = 11212019914061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212022011313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136731975706 + ... + 136731975787.

It is an arithmetic number, because the mean of its divisors is an integer number (2871371490687).

Almost surely, 2^{11212022011213} is an apocalyptic number.

It is an amenable number.

11212022011213 is a deficient number, since it is larger than the sum of its proper divisors (273463951535).

11212022011213 is an equidigital number, since it uses as much as digits as its factorization.

11212022011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273463951534.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11212022011213 its reverse (31211022021211), we get a palindrome (42423044032424).

The spelling of 11212022011213 in words is "eleven trillion, two hundred twelve billion, twenty-two million, eleven thousand, two hundred thirteen".