20031322122 has 192 divisors, whose sum is σ = 54070758144. Its totient is φ = 5229619200.

The previous prime is 20031322099. The next prime is 20031322133. The reversal of 20031322122 is 22122313002.

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 = 20031322095 and 20031322104.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 11465253 + ... + 11466999.

It is an arithmetic number, because the mean of its divisors is an integer number (281618532).

Almost surely, 2^20031322122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20031322122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27035379072).

20031322122 is an abundant number, since it is smaller than the sum of its proper divisors (34039436022).

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

20031322122 is a wasteful number, since it uses less digits than its factorization.

20031322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933 (or 1930 counting only the distinct ones).

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

Adding to 20031322122 its reverse (22122313002), we get a palindrome (42153635124).

The spelling of 20031322122 in words is "twenty billion, thirty-one million, three hundred twenty-two thousand, one hundred twenty-two".