1211112203223 has 8 divisors (see below), whose sum is σ = 1739032907248. Its totient is φ = 745299817344.

The previous prime is 1211112203209. The next prime is 1211112203237. The reversal of 1211112203223 is 3223022111121.

It is an interprime number because it is at equal distance from previous prime (1211112203209) and next prime (1211112203237).

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

It is not a de Polignac number, because 1211112203223 - 2⁴ = 1211112203207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211112203223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211112203263) 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, 15527079490 + ... + 15527079567.

It is an arithmetic number, because the mean of its divisors is an integer number (217379113406).

Almost surely, 2^{1211112203223} is an apocalyptic number.

1211112203223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1211112203223 is a deficient number, since it is larger than the sum of its proper divisors (527920704025).

1211112203223 is a wasteful number, since it uses less digits than its factorization.

1211112203223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31054159073.

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

Adding to 1211112203223 its reverse (3223022111121), we get a palindrome (4434134314344).

The spelling of 1211112203223 in words is "one trillion, two hundred eleven billion, one hundred twelve million, two hundred three thousand, two hundred twenty-three".