2211103121100 has 72 divisors (see below), whose sum is σ = 6398917141008. Its totient is φ = 589493049600.

The previous prime is 2211103121057. The next prime is 2211103121111. The reversal of 2211103121100 is 11213011122.

It is a super-2 number, since 2×2211103121100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2211103121100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480990 + ... + 2157210.

Almost surely, 2^{2211103121100} is an apocalyptic number.

2211103121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211103121100 is an abundant number, since it is smaller than the sum of its proper divisors (4187814019908).

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

2211103121100 is a wasteful number, since it uses less digits than its factorization.

2211103121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680635 (or 1680628 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2211103121100 its reverse (11213011122), we get a palindrome (2222316132222).

The spelling of 2211103121100 in words is "two trillion, two hundred eleven billion, one hundred three million, one hundred twenty-one thousand, one hundred".