211122021100212 has 72 divisors (see below), whose sum is σ = 548754207292200. Its totient is φ = 68389410578688.

The previous prime is 211122021100187. The next prime is 211122021100229. The reversal of 211122021100212 is 212001120221112.

211122021100212 is a `hidden beast` number, since 2 + 111 + 220 + 21 + 100 + 212 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 44761398636816 + 166360622463396 = 6690396^2 + 12898086^2 .

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

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 94492887 + ... + 96701342.

Almost surely, 2^{211122021100212} is an apocalyptic number.

It is an amenable number.

211122021100212 is an abundant number, since it is smaller than the sum of its proper divisors (337632186191988).

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

211122021100212 is a wasteful number, since it uses less digits than its factorization.

211122021100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191195105 (or 191195100 counting only the distinct ones).

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

Adding to 211122021100212 its reverse (212001120221112), we get a palindrome (423123141321324).

The spelling of 211122021100212 in words is "two hundred eleven trillion, one hundred twenty-two billion, twenty-one million, one hundred thousand, two hundred twelve".