11212320223 has 8 divisors (see below), whose sum is σ = 12710322800. Its totient is φ = 9805105728.

The previous prime is 11212320211. The next prime is 11212320227. The reversal of 11212320223 is 32202321211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212320223 - 2⁵ = 11212320191 is a prime.

It is a super-2 number, since 2×11212320223² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 11212320223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212320227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22696758 + ... + 22697251.

It is an arithmetic number, because the mean of its divisors is an integer number (1588790350).

Almost surely, 2^11212320223 is an apocalyptic number.

11212320223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11212320223 is a deficient number, since it is larger than the sum of its proper divisors (1498002577).

11212320223 is a wasteful number, since it uses less digits than its factorization.

11212320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45394041.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11212320223 its reverse (32202321211), we get a palindrome (43414641434).

The spelling of 11212320223 in words is "eleven billion, two hundred twelve million, three hundred twenty thousand, two hundred twenty-three".