2211011111100 has 108 divisors (see below), whose sum is σ = 7031624542712. Its totient is φ = 536002684800.

The previous prime is 2211011111081. The next prime is 2211011111117. The reversal of 2211011111100 is 11111101122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30418399 + ... + 30490998.

Almost surely, 2^{2211011111100} is an apocalyptic number.

2211011111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211011111100 is an abundant number, since it is smaller than the sum of its proper divisors (4820613431612).

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

2211011111100 is a wasteful number, since it uses less digits than its factorization.

2211011111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60909436 (or 60909418 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2211011111100 its reverse (11111101122), we get a palindrome (2222122212222).

The spelling of 2211011111100 in words is "two trillion, two hundred eleven billion, eleven million, one hundred eleven thousand, one hundred".