123121033 has 16 divisors (see below), whose sum is σ = 143095680. Its totient is φ = 103758336.

The previous prime is 123121013. The next prime is 123121049. The reversal of 123121033 is 330121321.

It is a cyclic number.

It is not a de Polignac number, because 123121033 - 2⁹ = 123120521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123120998 and 123121016.

It is not an unprimeable number, because it can be changed into a prime (123121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121035 + ... + 122047.

It is an arithmetic number, because the mean of its divisors is an integer number (8943480).

Almost surely, 2^123121033 is an apocalyptic number.

It is an amenable number.

123121033 is a deficient number, since it is larger than the sum of its proper divisors (19974647).

123121033 is a wasteful number, since it uses less digits than its factorization.

123121033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123121033 is about 11095.9917537821. The cubic root of 123121033 is about 497.4820518259.

Adding to 123121033 its reverse (330121321), we get a palindrome (453242354).

The spelling of 123121033 in words is "one hundred twenty-three million, one hundred twenty-one thousand, thirty-three".