211103113100 has 72 divisors (see below), whose sum is σ = 500571721776. Its totient is φ = 76636800000.

The previous prime is 211103113073. The next prime is 211103113121. The reversal of 211103113100 is 1311301112.

It is a happy number.

It is a super-2 number, since 2×211103113100² (a number of 23 digits) contains 22 as substring.

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, 501440 + ... + 820760.

Almost surely, 2^211103113100 is an apocalyptic number.

211103113100 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 211103113100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250285860888).

211103113100 is an abundant number, since it is smaller than the sum of its proper divisors (289468608676).

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

211103113100 is a wasteful number, since it uses less digits than its factorization.

211103113100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319947 (or 319940 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 211103113100 its reverse (1311301112), we get a palindrome (212414414212).

The spelling of 211103113100 in words is "two hundred eleven billion, one hundred three million, one hundred thirteen thousand, one hundred".