211200221022102 has 128 divisors (see below), whose sum is σ = 507994261125120. Its totient is φ = 64656308436480.

The previous prime is 211200221021953. The next prime is 211200221022191. The reversal of 211200221022102 is 201220122002112.

It is a happy number.

211200221022102 is a `hidden beast` number, since 21 + 1 + 200 + 221 + 0 + 221 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186041853 + ... + 187173639.

It is an arithmetic number, because the mean of its divisors is an integer number (3968705165040).

Almost surely, 2^{211200221022102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211200221022102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253997130562560).

211200221022102 is an abundant number, since it is smaller than the sum of its proper divisors (296794040103018).

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

211200221022102 is a wasteful number, since it uses less digits than its factorization.

211200221022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133155 (or 1133149 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211200221022102 its reverse (201220122002112), we get a palindrome (412420343024214).

The spelling of 211200221022102 in words is "two hundred eleven trillion, two hundred billion, two hundred twenty-one million, twenty-two thousand, one hundred two".