2201212211200 has 156 divisors (see below), whose sum is σ = 5539824927520. Its totient is φ = 867340615680.

The previous prime is 2201212211173. The next prime is 2201212211201. The reversal of 2201212211200 is 21122121022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201212211201) 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, 6700381 + ... + 7021219.

Almost surely, 2^{2201212211200} is an apocalyptic number.

2201212211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2201212211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2769912463760).

2201212211200 is an abundant number, since it is smaller than the sum of its proper divisors (3338612716320).

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

2201212211200 is an equidigital number, since it uses as much as digits as its factorization.

2201212211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320940 (or 320913 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2201212211200 its reverse (21122121022), we get a palindrome (2222334332222).

The spelling of 2201212211200 in words is "two trillion, two hundred one billion, two hundred twelve million, two hundred eleven thousand, two hundred".