1223111003211 has 12 divisors (see below), whose sum is σ = 1766789840088. Its totient is φ = 815373206304.

The previous prime is 1223111003209. The next prime is 1223111003273. The reversal of 1223111003211 is 1123001113221.

1223111003211 is a `hidden beast` number, since 1 + 2 + 231 + 110 + 0 + 321 + 1 = 666.

It is not a de Polignac number, because 1223111003211 - 2¹ = 1223111003209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223111043211) 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 11 ways as a sum of consecutive naturals, for example, 2616165 + ... + 3048038.

It is an arithmetic number, because the mean of its divisors is an integer number (147232486674).

Almost surely, 2^{1223111003211} is an apocalyptic number.

1223111003211 is a deficient number, since it is larger than the sum of its proper divisors (543678836877).

1223111003211 is a wasteful number, since it uses less digits than its factorization.

1223111003211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688202 (or 5688199 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1223111003211 its reverse (1123001113221), we get a palindrome (2346112116432).

The spelling of 1223111003211 in words is "one trillion, two hundred twenty-three billion, one hundred eleven million, three thousand, two hundred eleven".