212011122200120 has 128 divisors (see below), whose sum is σ = 509585780620800. Its totient is φ = 79104853180416.

The previous prime is 212011122200117. The next prime is 212011122200159. The reversal of 212011122200120 is 21002221110212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1438294262 + ... + 1438441658.

It is an arithmetic number, because the mean of its divisors is an integer number (3981138911100).

Almost surely, 2^{212011122200120} is an apocalyptic number.

212011122200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212011122200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254792890310400).

212011122200120 is an abundant number, since it is smaller than the sum of its proper divisors (297574658420680).

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

212011122200120 is a wasteful number, since it uses less digits than its factorization.

212011122200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166257 (or 166253 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212011122200120 its reverse (21002221110212), we get a palindrome (233013343310332).

The spelling of 212011122200120 in words is "two hundred twelve trillion, eleven billion, one hundred twenty-two million, two hundred thousand, one hundred twenty".