20223122004 has 36 divisors (see below), whose sum is σ = 54126592884. Its totient is φ = 6344508672.

The previous prime is 20223121991. The next prime is 20223122011. The reversal of 20223122004 is 40022132202.

It can be written as a sum of positive squares in 2 ways, for example, as 15214729104 + 5008392900 = 123348^2 + 70770^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16521547 + ... + 16522770.

It is an arithmetic number, because the mean of its divisors is an integer number (1503516469).

Almost surely, 2^20223122004 is an apocalyptic number.

It is an amenable number.

20223122004 is an abundant number, since it is smaller than the sum of its proper divisors (33903470880).

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

20223122004 is a wasteful number, since it uses less digits than its factorization.

20223122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33044344 (or 33044339 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20223122004 its reverse (40022132202), we get a palindrome (60245254206).

The spelling of 20223122004 in words is "twenty billion, two hundred twenty-three million, one hundred twenty-two thousand, four".