212012222122 has 8 divisors (see below), whose sum is σ = 320935932900. Its totient is φ = 105033577824.

The previous prime is 212012222119. The next prime is 212012222143. The reversal of 212012222122 is 221222210212.

It can be written as a sum of positive squares in 2 ways, for example, as 210358905201 + 1653316921 = 458649^2 + 40661^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 212012222122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486266347 + ... + 486266782.

Almost surely, 2^212012222122 is an apocalyptic number.

212012222122 is a deficient number, since it is larger than the sum of its proper divisors (108923710778).

212012222122 is a wasteful number, since it uses less digits than its factorization.

212012222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972533240.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212012222122 its reverse (221222210212), we get a palindrome (433234432334).

The spelling of 212012222122 in words is "two hundred twelve billion, twelve million, two hundred twenty-two thousand, one hundred twenty-two".