2211201211100 has 72 divisors (see below), whose sum is σ = 5484969668640. Its totient is φ = 757961521920.

The previous prime is 2211201210943. The next prime is 2211201211103. The reversal of 2211201211100 is 11121021122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211201211103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2905286 + ... + 3586514.

Almost surely, 2^{2211201211100} is an apocalyptic number.

2211201211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211201211100 is an abundant number, since it is smaller than the sum of its proper divisors (3273768457540).

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

2211201211100 is a wasteful number, since it uses less digits than its factorization.

2211201211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685887 (or 685880 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2211201211100 its reverse (11121021122), we get a palindrome (2222322232222).

The spelling of 2211201211100 in words is "two trillion, two hundred eleven billion, two hundred one million, two hundred eleven thousand, one hundred".