1211232122223 has 4 divisors (see below), whose sum is σ = 1614976162968. Its totient is φ = 807488081480.

The previous prime is 1211232122213. The next prime is 1211232122237. The reversal of 1211232122223 is 3222212321121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1211232122223 - 2⁴ = 1211232122207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211232122193 and 1211232122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211232122213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201872020368 + ... + 201872020373.

It is an arithmetic number, because the mean of its divisors is an integer number (403744040742).

Almost surely, 2^{1211232122223} is an apocalyptic number.

1211232122223 is a deficient number, since it is larger than the sum of its proper divisors (403744040745).

1211232122223 is an equidigital number, since it uses as much as digits as its factorization.

1211232122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403744040744.

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

Adding to 1211232122223 its reverse (3222212321121), we get a palindrome (4433444443344).

The spelling of 1211232122223 in words is "one trillion, two hundred eleven billion, two hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty-three".