211111200102 has 96 divisors (see below), whose sum is σ = 469514918880. Its totient is φ = 63228352000.

The previous prime is 211111200043. The next prime is 211111200121. The reversal of 211111200102 is 201002111112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47879674 + ... + 47884082.

It is an arithmetic number, because the mean of its divisors is an integer number (4890780405).

Almost surely, 2^211111200102 is an apocalyptic number.

211111200102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 211111200102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234757459440).

211111200102 is an abundant number, since it is smaller than the sum of its proper divisors (258403718778).

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

211111200102 is a wasteful number, since it uses less digits than its factorization.

211111200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190 (or 5179 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211111200102 its reverse (201002111112), we get a palindrome (412113311214).

The spelling of 211111200102 in words is "two hundred eleven billion, one hundred eleven million, two hundred thousand, one hundred two".