1212211103223 has 16 divisors (see below), whose sum is σ = 1638471792096. Its totient is φ = 797046243840.

The previous prime is 1212211103221. The next prime is 1212211103237. The reversal of 1212211103223 is 3223011122121.

It is not a de Polignac number, because 1212211103223 - 2¹ = 1212211103221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212211103223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212211103221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9903013 + ... + 10024673.

It is an arithmetic number, because the mean of its divisors is an integer number (102404487006).

Almost surely, 2^{1212211103223} is an apocalyptic number.

1212211103223 is a deficient number, since it is larger than the sum of its proper divisors (426260688873).

1212211103223 is a wasteful number, since it uses less digits than its factorization.

1212211103223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167234.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1212211103223 its reverse (3223011122121), we get a palindrome (4435222225344).

The spelling of 1212211103223 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred three thousand, two hundred twenty-three".