1212302222 has 4 divisors (see below), whose sum is σ = 1818453336. Its totient is φ = 606151110.

The previous prime is 1212302219. The next prime is 1212302257. The reversal of 1212302222 is 2222032121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2222032121 = 19 ⋅116949059.

It is a super-2 number, since 2×1212302222² = 2939353354932274568, 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 1212302222.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 303075554 + ... + 303075557.

It is an arithmetic number, because the mean of its divisors is an integer number (454613334).

Almost surely, 2^1212302222 is an apocalyptic number.

1212302222 is a deficient number, since it is larger than the sum of its proper divisors (606151114).

1212302222 is an equidigital number, since it uses as much as digits as its factorization.

1212302222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606151113.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1212302222 is about 34818.1306505677. The cubic root of 1212302222 is about 1066.2776358440.

Adding to 1212302222 its reverse (2222032121), we get a palindrome (3434334343).

The spelling of 1212302222 in words is "one billion, two hundred twelve million, three hundred two thousand, two hundred twenty-two".