123021130033 has 4 divisors (see below), whose sum is σ = 123076522228. Its totient is φ = 122965737840.

The previous prime is 123021130027. The next prime is 123021130069. The reversal of 123021130033 is 330031120321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57836402064 + 65184727969 = 240492^2 + 255313^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123021130033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123021130013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27692766 + ... + 27697207.

It is an arithmetic number, because the mean of its divisors is an integer number (30769130557).

Almost surely, 2^123021130033 is an apocalyptic number.

It is an amenable number.

123021130033 is a deficient number, since it is larger than the sum of its proper divisors (55392195).

123021130033 is an equidigital number, since it uses as much as digits as its factorization.

123021130033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55392194.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 123021130033 its reverse (330031120321), we get a palindrome (453052250354).

The spelling of 123021130033 in words is "one hundred twenty-three billion, twenty-one million, one hundred thirty thousand, thirty-three".