211121112001223 has 4 divisors (see below), whose sum is σ = 211121186159808. Its totient is φ = 211121037842640.

The previous prime is 211121112001207. The next prime is 211121112001237. The reversal of 211121112001223 is 322100211121112.

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 211121112001223 - 2⁴ = 211121112001207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211121112001195 and 211121112001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121114001223) 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, 32631086 + ... + 38562027.

It is an arithmetic number, because the mean of its divisors is an integer number (52780296539952).

Almost surely, 2^{211121112001223} is an apocalyptic number.

211121112001223 is a deficient number, since it is larger than the sum of its proper divisors (74158585).

211121112001223 is an equidigital number, since it uses as much as digits as its factorization.

211121112001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74158584.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 211121112001223 its reverse (322100211121112), we get a palindrome (533221323122335).

The spelling of 211121112001223 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twelve million, one thousand, two hundred twenty-three".