20123321022 has 80 divisors (see below), whose sum is σ = 54564127200. Its totient is φ = 5411308032.

The previous prime is 20123320993. The next prime is 20123321041. The reversal of 20123321022 is 22012332102.

20123321022 is a `hidden beast` number, since 201 + 233 + 210 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20123320986 and 20123321004.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 502647 + ... + 541202.

It is an arithmetic number, because the mean of its divisors is an integer number (682051590).

Almost surely, 2^20123321022 is an apocalyptic number.

20123321022 is an abundant number, since it is smaller than the sum of its proper divisors (34440806178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123321022 is a wasteful number, since it uses less digits than its factorization.

20123321022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043887 (or 1043878 counting only the distinct ones).

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

Adding to 20123321022 its reverse (22012332102), we get a palindrome (42135653124).

It can be divided in two parts, 2012332102 and 2, that multiplied together give a palindrome (4024664204).

The spelling of 20123321022 in words is "twenty billion, one hundred twenty-three million, three hundred twenty-one thousand, twenty-two".