20001222211112 has 64 divisors (see below), whose sum is σ = 40651434859200. Its totient is φ = 9194988741120.

The previous prime is 20001222211099. The next prime is 20001222211123. The reversal of 20001222211112 is 21111222210002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8719589 + ... + 10771892.

It is an arithmetic number, because the mean of its divisors is an integer number (635178669675).

Almost surely, 2^{20001222211112} is an apocalyptic number.

It is an amenable number.

20001222211112 is an abundant number, since it is smaller than the sum of its proper divisors (20650212648088).

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

20001222211112 is a wasteful number, since it uses less digits than its factorization.

20001222211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19491706 (or 19491702 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20001222211112 its reverse (21111222210002), we get a palindrome (41112444421114).

The spelling of 20001222211112 in words is "twenty trillion, one billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twelve".