12121232222 has 8 divisors (see below), whose sum is σ = 19834743672. Its totient is φ = 5509651000.

The previous prime is 12121232219. The next prime is 12121232261. The reversal of 12121232222 is 22223212121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12121232194 and 12121232203.

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, 275482529 + ... + 275482572.

It is an arithmetic number, because the mean of its divisors is an integer number (2479342959).

Almost surely, 2^12121232222 is an apocalyptic number.

12121232222 is a deficient number, since it is larger than the sum of its proper divisors (7713511450).

12121232222 is a wasteful number, since it uses less digits than its factorization.

12121232222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550965114.

The product of its digits is 384, while the sum is 20.

Adding to 12121232222 its reverse (22223212121), we get a palindrome (34344444343).

The spelling of 12121232222 in words is "twelve billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty-two".