223321312011 has 16 divisors (see below), whose sum is σ = 344399134464. Its totient is φ = 126074681184.

The previous prime is 223321311989. The next prime is 223321312063. The reversal of 223321312011 is 110213123322.

It is not a de Polignac number, because 223321312011 - 2¹³ = 223321303819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (223321312091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64060596 + ... + 64064081.

It is an arithmetic number, because the mean of its divisors is an integer number (21524945904).

Almost surely, 2^223321312011 is an apocalyptic number.

223321312011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

223321312011 is a deficient number, since it is larger than the sum of its proper divisors (121077822453).

223321312011 is a wasteful number, since it uses less digits than its factorization.

223321312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128124770.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 223321312011 its reverse (110213123322), we get a palindrome (333534435333).

The spelling of 223321312011 in words is "two hundred twenty-three billion, three hundred twenty-one million, three hundred twelve thousand, eleven".