11222120213 has 4 divisors (see below), whose sum is σ = 11240793228. Its totient is φ = 11203447200.

The previous prime is 11222120183. The next prime is 11222120243. The reversal of 11222120213 is 31202122211.

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 (11222120183) and next prime (11222120243).

It can be written as a sum of positive squares in 2 ways, for example, as 9800604004 + 1421516209 = 98998^2 + 37703^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222120213 - 2¹² = 11222116117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222120191 and 11222120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222120243) 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, 9335606 + ... + 9336807.

It is an arithmetic number, because the mean of its divisors is an integer number (2810198307).

Almost surely, 2^11222120213 is an apocalyptic number.

It is an amenable number.

11222120213 is a deficient number, since it is larger than the sum of its proper divisors (18673015).

11222120213 is an equidigital number, since it uses as much as digits as its factorization.

11222120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18673014.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11222120213 its reverse (31202122211), we get a palindrome (42424242424).

The spelling of 11222120213 in words is "eleven billion, two hundred twenty-two million, one hundred twenty thousand, two hundred thirteen".