211220212220112 has 80 divisors (see below), whose sum is σ = 548382097976000. Its totient is φ = 70054883914752.

The previous prime is 211220212220077. The next prime is 211220212220119. The reversal of 211220212220112 is 211022212022112.

It is a super-3 number, since 3×211220212220112³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220212220119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11271564 + ... + 23441172.

It is an arithmetic number, because the mean of its divisors is an integer number (6854776224700).

Almost surely, 2^{211220212220112} is an apocalyptic number.

It is an amenable number.

211220212220112 is an abundant number, since it is smaller than the sum of its proper divisors (337161885755888).

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

211220212220112 is a wasteful number, since it uses less digits than its factorization.

211220212220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171428 (or 12171422 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211220212220112 its reverse (211022212022112), we get a palindrome (422242424242224).

The spelling of 211220212220112 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty thousand, one hundred twelve".