212112002122 has 4 divisors (see below), whose sum is σ = 318168003186. Its totient is φ = 106056001060.

The previous prime is 212112002107. The next prime is 212112002131. The reversal of 212112002122 is 221200211212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 210964757481 + 1147244641 = 459309^2 + 33871^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212112002096 and 212112002105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53028000529 + ... + 53028000532.

Almost surely, 2^212112002122 is an apocalyptic number.

212112002122 is a deficient number, since it is larger than the sum of its proper divisors (106056001064).

212112002122 is a wasteful number, since it uses less digits than its factorization.

212112002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106056001063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212112002122 its reverse (221200211212), we get a palindrome (433312213334).

The spelling of 212112002122 in words is "two hundred twelve billion, one hundred twelve million, two thousand, one hundred twenty-two".