1211100220223 has 2 divisors, whose sum is σ = 1211100220224. Its totient is φ = 1211100220222.

The previous prime is 1211100220193. The next prime is 1211100220261. The reversal of 1211100220223 is 3220220011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211100220223 - 2²⁰ = 1211099171647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211100220273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550110111 + 605550110112.

It is an arithmetic number, because the mean of its divisors is an integer number (605550110112).

Almost surely, 2^{1211100220223} is an apocalyptic number.

1211100220223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211100220223 is an equidigital number, since it uses as much as digits as its factorization.

1211100220223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1211100220223 its reverse (3220220011121), we get a palindrome (4431320231344).

The spelling of 1211100220223 in words is "one trillion, two hundred eleven billion, one hundred million, two hundred twenty thousand, two hundred twenty-three".