123302022021 has 24 divisors (see below), whose sum is σ = 179140355576. Its totient is φ = 81722805120.

The previous prime is 123302022007. The next prime is 123302022037. The reversal of 123302022021 is 120220203321.

123302022021 is a `hidden beast` number, since 123 + 302 + 0 + 220 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 181037025 + 123120984996 = 13455^2 + 350886^2 .

It is not a de Polignac number, because 123302022021 - 2⁷ = 123302021893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123302021985 and 123302022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123302022061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6658251 + ... + 6676743.

Almost surely, 2^123302022021 is an apocalyptic number.

It is an amenable number.

123302022021 is a deficient number, since it is larger than the sum of its proper divisors (55838333555).

123302022021 is a wasteful number, since it uses less digits than its factorization.

123302022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22773 (or 22770 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123302022021 its reverse (120220203321), we get a palindrome (243522225342).

The spelling of 123302022021 in words is "one hundred twenty-three billion, three hundred two million, twenty-two thousand, twenty-one".