223211444121 has 80 divisors (see below), whose sum is σ = 354927344640. Its totient is φ = 139529900160.

The previous prime is 223211444101. The next prime is 223211444123. The reversal of 223211444121 is 121444112322.

223211444121 is a `hidden beast` number, since 2 + 2 + 3 + 211 + 4 + 441 + 2 + 1 = 666.

It is not a de Polignac number, because 223211444121 - 2¹¹ = 223211442073 is a prime.

It is a super-3 number, since 3×223211444121³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223211444123) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 52754076 + ... + 52758306.

It is an arithmetic number, because the mean of its divisors is an integer number (4436591808).

Almost surely, 2^223211444121 is an apocalyptic number.

It is an amenable number.

223211444121 is a deficient number, since it is larger than the sum of its proper divisors (131715900519).

223211444121 is a wasteful number, since it uses less digits than its factorization.

223211444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916 (or 4907 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 223211444121 its reverse (121444112322), we get a palindrome (344655556443).

The spelling of 223211444121 in words is "two hundred twenty-three billion, two hundred eleven million, four hundred forty-four thousand, one hundred twenty-one".