211112012201220 has 96 divisors (see below), whose sum is σ = 707315459706240. Its totient is φ = 51966033770880.

The previous prime is 211112012201191. The next prime is 211112012201221. The reversal of 211112012201220 is 22102210211112.

211112012201220 is a `hidden beast` number, since 2 + 11 + 11 + 201 + 220 + 1 + 220 = 666.

It is a super-3 number, since 3×211112012201220³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211112012201193 and 211112012201202.

It is not an unprimeable number, because it can be changed into a prime (211112012201221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15036461086 + ... + 15036475125.

It is an arithmetic number, because the mean of its divisors is an integer number (7367869371940).

Almost surely, 2^{211112012201220} is an apocalyptic number.

211112012201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112012201220 is an abundant number, since it is smaller than the sum of its proper divisors (496203447505020).

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

211112012201220 is a wasteful number, since it uses less digits than its factorization.

211112012201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30072936242 (or 30072936234 counting only the distinct ones).

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

Adding to 211112012201220 its reverse (22102210211112), we get a palindrome (233214222412332).

The spelling of 211112012201220 in words is "two hundred eleven trillion, one hundred twelve billion, twelve million, two hundred one thousand, two hundred twenty".