211211111022102 has 24 divisors (see below), whose sum is σ = 458982008831736. Its totient is φ = 70194790604736.

The previous prime is 211211111022097. The next prime is 211211111022127. The reversal of 211211111022102 is 201220111112112.

It is a happy number.

211211111022102 is a `hidden beast` number, since 211 + 211 + 11 + 10 + 221 + 0 + 2 = 666.

It is a super-2 number, since 2×211211111022102² (a number of 29 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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17409416208 + ... + 17409428339.

It is an arithmetic number, because the mean of its divisors is an integer number (19124250367989).

Almost surely, 2^{211211111022102} is an apocalyptic number.

211211111022102 is an abundant number, since it is smaller than the sum of its proper divisors (247770897809634).

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

211211111022102 is a wasteful number, since it uses less digits than its factorization.

211211111022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34818844892 (or 34818844889 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211211111022102 its reverse (201220111112112), we get a palindrome (412431222134214).

The spelling of 211211111022102 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred eleven million, twenty-two thousand, one hundred two".