223121443133 has 2 divisors, whose sum is σ = 223121443134. Its totient is φ = 223121443132.

The previous prime is 223121443079. The next prime is 223121443147. The reversal of 223121443133 is 331344121322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222507493849 + 613949284 = 471707^2 + 24778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223121443133 is a prime.

It is a super-3 number, since 3×223121443133³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223121443096 and 223121443105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223121443163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111560721566 + 111560721567.

It is an arithmetic number, because the mean of its divisors is an integer number (111560721567).

Almost surely, 2^223121443133 is an apocalyptic number.

It is an amenable number.

223121443133 is a deficient number, since it is larger than the sum of its proper divisors (1).

223121443133 is an equidigital number, since it uses as much as digits as its factorization.

223121443133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

Adding to 223121443133 its reverse (331344121322), we get a palindrome (554465564455).

The spelling of 223121443133 in words is "two hundred twenty-three billion, one hundred twenty-one million, four hundred forty-three thousand, one hundred thirty-three".