20203221022012 has 24 divisors (see below), whose sum is σ = 40414577301504. Its totient is φ = 8656780025712.

The previous prime is 20203221022001. The next prime is 20203221022013. The reversal of 20203221022012 is 21022012230202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203221022013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72494668 + ... + 72772819.

It is an arithmetic number, because the mean of its divisors is an integer number (1683940720896).

Almost surely, 2^{20203221022012} is an apocalyptic number.

It is an amenable number.

20203221022012 is an abundant number, since it is smaller than the sum of its proper divisors (20211356279492).

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

20203221022012 is a wasteful number, since it uses less digits than its factorization.

20203221022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145272465 (or 145272463 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20203221022012 its reverse (21022012230202), we get a palindrome (41225233252214).

The spelling of 20203221022012 in words is "twenty trillion, two hundred three billion, two hundred twenty-one million, twenty-two thousand, twelve".