123213330021 has 8 divisors (see below), whose sum is σ = 164294902944. Its totient is φ = 82136988560.

The previous prime is 123213330017. The next prime is 123213330047. The reversal of 123213330021 is 120033312321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123213330021 - 2² = 123213330017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123213330021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213330091) 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 7 ways as a sum of consecutive naturals, for example, 1252575 + ... + 1347356.

It is an arithmetic number, because the mean of its divisors is an integer number (20536862868).

Almost surely, 2^123213330021 is an apocalyptic number.

It is an amenable number.

123213330021 is a deficient number, since it is larger than the sum of its proper divisors (41081572923).

123213330021 is a wasteful number, since it uses less digits than its factorization.

123213330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615731.

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

Adding to 123213330021 its reverse (120033312321), we get a palindrome (243246642342).

The spelling of 123213330021 in words is "one hundred twenty-three billion, two hundred thirteen million, three hundred thirty thousand, twenty-one".