223123120011 has 48 divisors (see below), whose sum is σ = 354214573440. Its totient is φ = 134218114560.

The previous prime is 223123120001. The next prime is 223123120049. The reversal of 223123120011 is 110021321322.

223123120011 is a `hidden beast` number, since 2 + 231 + 231 + 200 + 1 + 1 = 666.

It is not a de Polignac number, because 223123120011 - 2¹³ = 223123111819 is a prime.

It is a super-3 number, since 3×223123120011³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223123120001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12691035 + ... + 12708603.

It is an arithmetic number, because the mean of its divisors is an integer number (7379470280).

Almost surely, 2^223123120011 is an apocalyptic number.

223123120011 is a deficient number, since it is larger than the sum of its proper divisors (131091453429).

223123120011 is a wasteful number, since it uses less digits than its factorization.

223123120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18536 (or 18533 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 223123120011 its reverse (110021321322), we get a palindrome (333144441333).

The spelling of 223123120011 in words is "two hundred twenty-three billion, one hundred twenty-three million, one hundred twenty thousand, eleven".