1211310203223 has 8 divisors (see below), whose sum is σ = 1615377346288. Its totient is φ = 807391597824.

The previous prime is 1211310203209. The next prime is 1211310203251. The reversal of 1211310203223 is 3223020131121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1211310203223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211310203223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211310203293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37115386 + ... + 37148007.

It is an arithmetic number, because the mean of its divisors is an integer number (201922168286).

Almost surely, 2^{1211310203223} is an apocalyptic number.

1211310203223 is a deficient number, since it is larger than the sum of its proper divisors (404067143065).

1211310203223 is an equidigital number, since it uses as much as digits as its factorization.

1211310203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74268833.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1211310203223 its reverse (3223020131121), we get a palindrome (4434330334344).

The spelling of 1211310203223 in words is "one trillion, two hundred eleven billion, three hundred ten million, two hundred three thousand, two hundred twenty-three".