11220023213 has 4 divisors (see below), whose sum is σ = 12822883680. Its totient is φ = 9617162748.

The previous prime is 11220023209. The next prime is 11220023219. The reversal of 11220023213 is 31232002211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220023213 - 2² = 11220023209 is a prime.

It is a super-3 number, since 3×11220023213³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220023191 and 11220023200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220023219) 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, 801430223 + ... + 801430236.

It is an arithmetic number, because the mean of its divisors is an integer number (3205720920).

Almost surely, 2^11220023213 is an apocalyptic number.

It is an amenable number.

11220023213 is a deficient number, since it is larger than the sum of its proper divisors (1602860467).

11220023213 is an equidigital number, since it uses as much as digits as its factorization.

11220023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602860466.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11220023213 its reverse (31232002211), we get a palindrome (42452025424).

The spelling of 11220023213 in words is "eleven billion, two hundred twenty million, twenty-three thousand, two hundred thirteen".