1212122321223 has 32 divisors (see below), whose sum is σ = 1774863498240. Its totient is φ = 729715608960.

The previous prime is 1212122321197. The next prime is 1212122321279. The reversal of 1212122321223 is 3221232212121.

It is not a de Polignac number, because 1212122321223 - 2³⁰ = 1211048579399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212122321193 and 1212122321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212122326223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17617333 + ... + 17686001.

It is an arithmetic number, because the mean of its divisors is an integer number (55464484320).

Almost surely, 2^{1212122321223} is an apocalyptic number.

1212122321223 is a deficient number, since it is larger than the sum of its proper divisors (562741177017).

1212122321223 is a wasteful number, since it uses less digits than its factorization.

1212122321223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72247.

The product of its digits is 1152, while the sum is 24.

Adding to 1212122321223 its reverse (3221232212121), we get a palindrome (4433354533344).

The spelling of 1212122321223 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, three hundred twenty-one thousand, two hundred twenty-three".