20021222010012 has 24 divisors (see below), whose sum is σ = 46717596172800. Its totient is φ = 6673539029616.

The previous prime is 20021222010001. The next prime is 20021222010019. The reversal of 20021222010012 is 21001022212002.

It is a junction number, because it is equal to n+sod(n) for n = 20021222009973 and 20021222010000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021222010019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24791062 + ... + 25585917.

It is an arithmetic number, because the mean of its divisors is an integer number (1946566507200).

Almost surely, 2^{20021222010012} is an apocalyptic number.

It is an amenable number.

20021222010012 is an abundant number, since it is smaller than the sum of its proper divisors (26696374162788).

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

20021222010012 is a wasteful number, since it uses less digits than its factorization.

20021222010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50410105 (or 50410103 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20021222010012 its reverse (21001022212002), we get a palindrome (41022244222014).

The spelling of 20021222010012 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, ten thousand, twelve".