20210221110012 has 96 divisors (see below), whose sum is σ = 49635027154944. Its totient is φ = 6391493472000.

The previous prime is 20210221109987. The next prime is 20210221110041. The reversal of 20210221110012 is 21001112201202.

It is a junction number, because it is equal to n+sod(n) for n = 20210221109973 and 20210221110000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25256563 + ... + 26044469.

It is an arithmetic number, because the mean of its divisors is an integer number (517031532864).

Almost surely, 2^{20210221110012} is an apocalyptic number.

It is an amenable number.

20210221110012 is an abundant number, since it is smaller than the sum of its proper divisors (29424806044932).

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

20210221110012 is a wasteful number, since it uses less digits than its factorization.

20210221110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789299 (or 789297 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20210221110012 its reverse (21001112201202), we get a palindrome (41211333311214).

The spelling of 20210221110012 in words is "twenty trillion, two hundred ten billion, two hundred twenty-one million, one hundred ten thousand, twelve".