223211001121 has 4 divisors (see below), whose sum is σ = 223756749700. Its totient is φ = 222665252544.

The previous prime is 223211001109. The next prime is 223211001133. The reversal of 223211001121 is 121100112322.

223211001121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (223211001109) and next prime (223211001133).

It can be written as a sum of positive squares in 2 ways, for example, as 103002483600 + 120208517521 = 320940^2 + 346711^2 .

It is a cyclic number.

It is not a de Polignac number, because 223211001121 - 2⁷ = 223211000993 is a prime.

It is a super-3 number, since 3×223211001121³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223211001095 and 223211001104.

It is not an unprimeable number, because it can be changed into a prime (223211061121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272873676 + ... + 272874493.

It is an arithmetic number, because the mean of its divisors is an integer number (55939187425).

Almost surely, 2^223211001121 is an apocalyptic number.

It is an amenable number.

223211001121 is a deficient number, since it is larger than the sum of its proper divisors (545748579).

223211001121 is an equidigital number, since it uses as much as digits as its factorization.

223211001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545748578.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 223211001121 its reverse (121100112322), we get a palindrome (344311113443).

The spelling of 223211001121 in words is "two hundred twenty-three billion, two hundred eleven million, one thousand, one hundred twenty-one".