123213021033 has 24 divisors (see below), whose sum is σ = 175152011328. Its totient is φ = 76898811616.

The previous prime is 123213020981. The next prime is 123213021089. The reversal of 123213021033 is 330120312321.

It is not a de Polignac number, because 123213021033 - 2⁹ = 123213020521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123213021733) 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 23 ways as a sum of consecutive naturals, for example, 251766 + ... + 556607.

It is an arithmetic number, because the mean of its divisors is an integer number (7298000472).

Almost surely, 2^123213021033 is an apocalyptic number.

It is an amenable number.

123213021033 is a deficient number, since it is larger than the sum of its proper divisors (51938990295).

123213021033 is an equidigital number, since it uses as much as digits as its factorization.

123213021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808493 (or 808446 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123213021033 its reverse (330120312321), we get a palindrome (453333333354).

The spelling of 123213021033 in words is "one hundred twenty-three billion, two hundred thirteen million, twenty-one thousand, thirty-three".