1212220222 has 8 divisors (see below), whose sum is σ = 1823396400. Its totient is φ = 604421424.

The previous prime is 1212220211. The next prime is 1212220223. The reversal of 1212220222 is 2220222121.

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 = 1212220196 and 1212220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843447 + ... + 844882.

It is an arithmetic number, because the mean of its divisors is an integer number (227924550).

Almost surely, 2^1212220222 is an apocalyptic number.

1212220222 is a deficient number, since it is larger than the sum of its proper divisors (611176178).

1212220222 is a wasteful number, since it uses less digits than its factorization.

1212220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688690.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1212220222 is about 34816.9530832323. The cubic root of 1212220222 is about 1066.2535943314.

Adding to 1212220222 its reverse (2220222121), we get a palindrome (3432442343).

It can be divided in two parts, 121 and 2220222, that multiplied together give a palindrome (268646862).

The spelling of 1212220222 in words is "one billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty-two".