2212121222 has 16 divisors (see below), whose sum is σ = 3362243040. Its totient is φ = 1091459712.

The previous prime is 2212121203. The next prime is 2212121237. The reversal of 2212121222 is 2221212122.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2212121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30383 + ... + 73125.

It is an arithmetic number, because the mean of its divisors is an integer number (210140190).

Almost surely, 2^2212121222 is an apocalyptic number.

2212121222 is a deficient number, since it is larger than the sum of its proper divisors (1150121818).

2212121222 is a wasteful number, since it uses less digits than its factorization.

2212121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43087.

The product of its digits is 128, while the sum is 17.

The square root of 2212121222 is about 47033.1927685119. The cubic root of 2212121222 is about 1302.9756730953.

Adding to 2212121222 its reverse (2221212122), we get a palindrome (4433333344).

It can be divided in two parts, 221212122 and 2, that multiplied together give a palindrome (442424244).

The spelling of 2212121222 in words is "two billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twenty-two".