211221114102 has 16 divisors (see below), whose sum is σ = 469380253680. Its totient is φ = 70407038016.

The previous prime is 211221114053. The next prime is 211221114217. The reversal of 211221114102 is 201411122112.

211221114102 is a `hidden beast` number, since 21 + 1 + 221 + 11 + 410 + 2 = 666.

It is a super-2 number, since 2×211221114102² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1955751003 + ... + 1955751110.

It is an arithmetic number, because the mean of its divisors is an integer number (29336265855).

Almost surely, 2^211221114102 is an apocalyptic number.

211221114102 is an abundant number, since it is smaller than the sum of its proper divisors (258159139578).

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

211221114102 is a wasteful number, since it uses less digits than its factorization.

211221114102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911502124 (or 3911502118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211221114102 its reverse (201411122112), we get a palindrome (412632236214).

The spelling of 211221114102 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred fourteen thousand, one hundred two".