1212210122222 has 64 divisors (see below), whose sum is σ = 2041843507200. Its totient is φ = 534965472000.

The previous prime is 1212210122161. The next prime is 1212210122251. The reversal of 1212210122222 is 2222210122121.

It is a junction number, because it is equal to n+sod(n) for n = 1212210122194 and 1212210122203.

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, 261306179 + ... + 261310817.

It is an arithmetic number, because the mean of its divisors is an integer number (31903804800).

Almost surely, 2^{1212210122222} is an apocalyptic number.

1212210122222 is a deficient number, since it is larger than the sum of its proper divisors (829633384978).

1212210122222 is a wasteful number, since it uses less digits than its factorization.

1212210122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1212210122222 its reverse (2222210122121), we get a palindrome (3434420244343).

The spelling of 1212210122222 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-two thousand, two hundred twenty-two".