1212318222 has 16 divisors (see below), whose sum is σ = 2449633872. Its totient is φ = 399939840.

The previous prime is 1212318197. The next prime is 1212318223. The reversal of 1212318222 is 2228132121.

It is a junction number, because it is equal to n+sod(n) for n = 1212318192 and 1212318201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212318223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040929 + ... + 1042092.

It is an arithmetic number, because the mean of its divisors is an integer number (153102117).

Almost surely, 2^1212318222 is an apocalyptic number.

1212318222 is an abundant number, since it is smaller than the sum of its proper divisors (1237315650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212318222 is a wasteful number, since it uses less digits than its factorization.

1212318222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083123.

The product of its digits is 768, while the sum is 24.

The square root of 1212318222 is about 34818.3604151603. The cubic root of 1212318222 is about 1066.2823267445.

The spelling of 1212318222 in words is "one billion, two hundred twelve million, three hundred eighteen thousand, two hundred twenty-two".