20123313023021 has 8 divisors (see below), whose sum is σ = 21671299357344. Its totient is φ = 18575332285680.

The previous prime is 20123313023003. The next prime is 20123313023027. The reversal of 20123313023021 is 12032031332102.

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 20123313023021 - 2²² = 20123308828717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123313023027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8847086 + ... + 10886576.

It is an arithmetic number, because the mean of its divisors is an integer number (2708912419668).

Almost surely, 2^{20123313023021} is an apocalyptic number.

It is an amenable number.

20123313023021 is a deficient number, since it is larger than the sum of its proper divisors (1547986334323).

20123313023021 is a wasteful number, since it uses less digits than its factorization.

20123313023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798491.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20123313023021 its reverse (12032031332102), we get a palindrome (32155344355123).

The spelling of 20123313023021 in words is "twenty trillion, one hundred twenty-three billion, three hundred thirteen million, twenty-three thousand, twenty-one".