1212200212222 has 64 divisors (see below), whose sum is σ = 1925116139520. Its totient is φ = 571655177856.

The previous prime is 1212200212217. The next prime is 1212200212253. The reversal of 1212200212222 is 2222120022121.

It is a super-2 number, since 2×1212200212222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212200212222.

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 31 ways as a sum of consecutive naturals, for example, 312662548 + ... + 312666424.

It is an arithmetic number, because the mean of its divisors is an integer number (30079939680).

Almost surely, 2^{1212200212222} is an apocalyptic number.

1212200212222 is a deficient number, since it is larger than the sum of its proper divisors (712915927298).

1212200212222 is a wasteful number, since it uses less digits than its factorization.

1212200212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4705.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212200212222 its reverse (2222120022121), we get a palindrome (3434320234343).

The spelling of 1212200212222 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twelve thousand, two hundred twenty-two".