123221033 has 4 divisors (see below), whose sum is σ = 132699588. Its totient is φ = 113742480.

The previous prime is 123221027. The next prime is 123221041. The reversal of 123221033 is 330122321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330122321 = 19 ⋅17374859.

It can be written as a sum of positive squares in 2 ways, for example, as 31214569 + 92006464 = 5587^2 + 9592^2 .

It is a cyclic number.

It is not a de Polignac number, because 123221033 - 2¹² = 123216937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123221533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4739258 + ... + 4739283.

It is an arithmetic number, because the mean of its divisors is an integer number (33174897).

Almost surely, 2^123221033 is an apocalyptic number.

123221033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123221033 is a deficient number, since it is larger than the sum of its proper divisors (9478555).

123221033 is an equidigital number, since it uses as much as digits as its factorization.

123221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9478554.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123221033 is about 11100.4969708568. The cubic root of 123221033 is about 497.6167018295.

Adding to 123221033 its reverse (330122321), we get a palindrome (453343354).

The spelling of 123221033 in words is "one hundred twenty-three million, two hundred twenty-one thousand, thirty-three".