20031223220000 has 240 divisors, whose sum is σ = 50791803445152. Its totient is φ = 7769053440000.

The previous prime is 20031223219999. The next prime is 20031223220083. The reversal of 20031223220000 is 2232213002.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 133585067 + ... + 133734933.

Almost surely, 2^{20031223220000} is an apocalyptic number.

20031223220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20031223220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25395901722576).

20031223220000 is an abundant number, since it is smaller than the sum of its proper divisors (30760580225152).

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

20031223220000 is a wasteful number, since it uses less digits than its factorization.

20031223220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150101 (or 150078 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20031223220000 its reverse (2232213002), we get a palindrome (20033455433002).

The spelling of 20031223220000 in words is "twenty trillion, thirty-one billion, two hundred twenty-three million, two hundred twenty thousand".