211111212222102 has 32 divisors (see below), whose sum is σ = 425306755808352. Its totient is φ = 69856354682624.

The previous prime is 211111212222059. The next prime is 211111212222179. The reversal of 211111212222102 is 201222212111112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167716108 + ... + 168970160.

It is an arithmetic number, because the mean of its divisors is an integer number (13290836119011).

Almost surely, 2^{211111212222102} is an apocalyptic number.

211111212222102 is an abundant number, since it is smaller than the sum of its proper divisors (214195543586250).

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

211111212222102 is a wasteful number, since it uses less digits than its factorization.

211111212222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458992.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211111212222102 its reverse (201222212111112), we get a palindrome (412333424333214).

The spelling of 211111212222102 in words is "two hundred eleven trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, one hundred two".