212222211122 has 4 divisors (see below), whose sum is σ = 318333316686. Its totient is φ = 106111105560.

The previous prime is 212222211053. The next prime is 212222211127. The reversal of 212222211122 is 221112222212.

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., 211470299881 + 751911241 = 459859^2 + 27421^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212222211094 and 212222211103.

It is not an unprimeable number, because it can be changed into a prime (212222211127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53055552779 + ... + 53055552782.

Almost surely, 2^212222211122 is an apocalyptic number.

212222211122 is a deficient number, since it is larger than the sum of its proper divisors (106111105564).

212222211122 is a wasteful number, since it uses less digits than its factorization.

212222211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106111105563.

The product of its digits is 256, while the sum is 20.

Adding to 212222211122 its reverse (221112222212), we get a palindrome (433334433334).

The spelling of 212222211122 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-two".