212222122222 has 8 divisors (see below), whose sum is σ = 347272563672. Its totient is φ = 96464601000.

The previous prime is 212222122171. The next prime is 212222122249. The reversal of 212222122222 is 222221222212.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 9646460101 = 212222122222 / (2 + 1 + 2 + 2 + 2 + 2 + 1 + 2 + 2 + 2 + 2 + 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 = 212222122193 and 212222122202.

It is a congruent number.

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, 4823230029 + ... + 4823230072.

It is an arithmetic number, because the mean of its divisors is an integer number (43409070459).

Almost surely, 2^212222122222 is an apocalyptic number.

212222122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212222122222 is a deficient number, since it is larger than the sum of its proper divisors (135050441450).

212222122222 is a wasteful number, since it uses less digits than its factorization.

212222122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9646460114.

The product of its digits is 1024, while the sum is 22.

Adding to 212222122222 its reverse (222221222212), we get a palindrome (434443344434).

The spelling of 212222122222 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".