211112221100120 has 64 divisors (see below), whose sum is σ = 480774789411840. Its totient is φ = 83424484540800.

The previous prime is 211112221100113. The next prime is 211112221100189. The reversal of 211112221100120 is 21001122211112.

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, 89164646 + ... + 91501685.

It is an arithmetic number, because the mean of its divisors is an integer number (7512106084560).

Almost surely, 2^{211112221100120} is an apocalyptic number.

211112221100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112221100120 is an abundant number, since it is smaller than the sum of its proper divisors (269662568311720).

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

211112221100120 is a wasteful number, since it uses less digits than its factorization.

211112221100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180666696 (or 180666692 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211112221100120 its reverse (21001122211112), we get a palindrome (232113343311232).

The spelling of 211112221100120 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred thousand, one hundred twenty".