212031122 has 8 divisors (see below), whose sum is σ = 329013900. Its totient is φ = 102359824.

The previous prime is 212031119. The next prime is 212031137. The reversal of 212031122 is 221130212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 209989081 + 2042041 = 14491^2 + 1429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212031097 and 212031106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1827797 + ... + 1827912.

Almost surely, 2^212031122 is an apocalyptic number.

212031122 is a deficient number, since it is larger than the sum of its proper divisors (116982778).

212031122 is a wasteful number, since it uses less digits than its factorization.

212031122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655740.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212031122 is about 14561.2884732087. The cubic root of 212031122 is about 596.3023723568.

Adding to 212031122 its reverse (221130212), we get a palindrome (433161334).

The spelling of 212031122 in words is "two hundred twelve million, thirty-one thousand, one hundred twenty-two".