223220312011 has 16 divisors (see below), whose sum is σ = 233694720000. Its totient is φ = 212810688288.

The previous prime is 223220311943. The next prime is 223220312023. The reversal of 223220312011 is 110213022322.

It is a cyclic number.

It is not a de Polignac number, because 223220312011 - 2²⁵ = 223186757579 is a prime.

It is a super-3 number, since 3×223220312011³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223220312011.

It is not an unprimeable number, because it can be changed into a prime (223220312111) 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, 16866945 + ... + 16880173.

It is an arithmetic number, because the mean of its divisors is an integer number (14605920000).

Almost surely, 2^223220312011 is an apocalyptic number.

223220312011 is a deficient number, since it is larger than the sum of its proper divisors (10474407989).

223220312011 is a wasteful number, since it uses less digits than its factorization.

223220312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15618.

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

Adding to 223220312011 its reverse (110213022322), we get a palindrome (333433334333).

The spelling of 223220312011 in words is "two hundred twenty-three billion, two hundred twenty million, three hundred twelve thousand, eleven".