211020120111112 has 64 divisors (see below), whose sum is σ = 440812654979760. Its totient is φ = 94077663744000.

The previous prime is 211020120111089. The next prime is 211020120111133. The reversal of 211020120111112 is 211111021020112.

It can be written as a sum of positive squares in 8 ways, for example, as 144680626362276 + 66339493748836 = 12028326^2 + 8144906^2 .

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, 244563253 + ... + 245424580.

Almost surely, 2^{211020120111112} is an apocalyptic number.

It is an amenable number.

211020120111112 is an abundant number, since it is smaller than the sum of its proper divisors (229792534868648).

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

211020120111112 is a wasteful number, since it uses less digits than its factorization.

211020120111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489987994 (or 489987990 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 211020120111112 its reverse (211111021020112), we get a palindrome (422131141131224).

The spelling of 211020120111112 in words is "two hundred eleven trillion, twenty billion, one hundred twenty million, one hundred eleven thousand, one hundred twelve".