2121232222 has 16 divisors (see below), whose sum is σ = 3376412640. Its totient is φ = 996035328.

The previous prime is 2121232213. The next prime is 2121232241. The reversal of 2121232222 is 2222321212.

It is a super-2 number, since 2×2121232222² = 8999252279302114568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121232222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52722 + ... + 83797.

It is an arithmetic number, because the mean of its divisors is an integer number (211025790).

Almost surely, 2^2121232222 is an apocalyptic number.

2121232222 is a deficient number, since it is larger than the sum of its proper divisors (1255180418).

2121232222 is a wasteful number, since it uses less digits than its factorization.

2121232222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136995.

The product of its digits is 384, while the sum is 19.

The square root of 2121232222 is about 46056.8368648999. The cubic root of 2121232222 is about 1284.8805012344.

Adding to 2121232222 its reverse (2222321212), we get a palindrome (4343553434).

The spelling of 2121232222 in words is "two billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty-two".