201211220000 has 120 divisors (see below), whose sum is σ = 565725859776. Its totient is φ = 68986656000.

The previous prime is 201211219991. The next prime is 201211220011. The reversal of 201211220000 is 22112102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 578612 + ... + 858611.

Almost surely, 2^201211220000 is an apocalyptic number.

201211220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211220000 is an abundant number, since it is smaller than the sum of its proper divisors (364514639776).

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

201211220000 is an equidigital number, since it uses as much as digits as its factorization.

201211220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437260 (or 1437237 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201211220000 its reverse (22112102), we get a palindrome (201233332102).

The spelling of 201211220000 in words is "two hundred one billion, two hundred eleven million, two hundred twenty thousand".