212011122 has 16 divisors (see below), whose sum is σ = 425675232. Its totient is φ = 70394880.

The previous prime is 212011117. The next prime is 212011153. The reversal of 212011122 is 221110212.

It is a junction number, because it is equal to n+sod(n) for n = 212011098 and 212011107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67204 + ... + 70287.

It is an arithmetic number, because the mean of its divisors is an integer number (26604702).

Almost surely, 2^212011122 is an apocalyptic number.

212011122 is an abundant number, since it is smaller than the sum of its proper divisors (213664110).

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

212011122 is a wasteful number, since it uses less digits than its factorization.

212011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137753.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 212011122 is about 14560.6017046000. The cubic root of 212011122 is about 596.2836228727.

Adding to 212011122 its reverse (221110212), we get a palindrome (433121334).

The spelling of 212011122 in words is "two hundred twelve million, eleven thousand, one hundred twenty-two".