212212201122 has 12 divisors (see below), whose sum is σ = 459793102470. Its totient is φ = 70737400368.

The previous prime is 212212201109. The next prime is 212212201133. The reversal of 212212201122 is 221102212212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 198008090361 + 14204110761 = 444981^2 + 119181^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11789566729 = 212212201122 / (2 + 1 + 2 + 2 + 1 + 2 + 2 + 0 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 212212201095 and 212212201104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5894783347 + ... + 5894783382.

Almost surely, 2^212212201122 is an apocalyptic number.

212212201122 is an abundant number, since it is smaller than the sum of its proper divisors (247580901348).

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

212212201122 is a wasteful number, since it uses less digits than its factorization.

212212201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11789566737 (or 11789566734 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212212201122 its reverse (221102212212), we get a palindrome (433314413334).

The spelling of 212212201122 in words is "two hundred twelve billion, two hundred twelve million, two hundred one thousand, one hundred twenty-two".