20211111212200 has 48 divisors (see below), whose sum is σ = 47652676328160. Its totient is φ = 7970579064000.

The previous prime is 20211111212197. The next prime is 20211111212207. The reversal of 20211111212200 is 221211111202.

It is not an unprimeable number, because it can be changed into a prime (20211111212207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711644646 + ... + 711673045.

It is an arithmetic number, because the mean of its divisors is an integer number (992764090170).

Almost surely, 2^{20211111212200} is an apocalyptic number.

20211111212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211111212200 is an abundant number, since it is smaller than the sum of its proper divisors (27441565115960).

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

20211111212200 is a wasteful number, since it uses less digits than its factorization.

20211111212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423317778 (or 1423317769 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20211111212200 its reverse (221211111202), we get a palindrome (20432322323402).

The spelling of 20211111212200 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, two hundred twelve thousand, two hundred".