211111021220112 has 200 divisors, whose sum is σ = 667285676608320. Its totient is φ = 64042346269440.

The previous prime is 211111021220087. The next prime is 211111021220117. The reversal of 211111021220112 is 211022120111112.

It is a happy number.

211111021220112 is a `hidden beast` number, since 211 + 1 + 110 + 212 + 20 + 112 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (211111021220117) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 87045562 + ... + 89437977.

Almost surely, 2^{211111021220112} is an apocalyptic number.

It is an amenable number.

211111021220112 is an abundant number, since it is smaller than the sum of its proper divisors (456174655388208).

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

211111021220112 is a wasteful number, since it uses less digits than its factorization.

211111021220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176483643 (or 176483628 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211111021220112 its reverse (211022120111112), we get a palindrome (422133141331224).

The spelling of 211111021220112 in words is "two hundred eleven trillion, one hundred eleven billion, twenty-one million, two hundred twenty thousand, one hundred twelve".