211121012223 has 32 divisors (see below), whose sum is σ = 352212326400. Its totient is φ = 123824635200.

The previous prime is 211121012147. The next prime is 211121012273. The reversal of 211121012223 is 322210121112.

It is not a de Polignac number, because 211121012223 - 2¹⁷ = 211120881151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211121012196 and 211121012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121012273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11456038 + ... + 11474451.

It is an arithmetic number, because the mean of its divisors is an integer number (11006635200).

Almost surely, 2^211121012223 is an apocalyptic number.

211121012223 is a deficient number, since it is larger than the sum of its proper divisors (141091314177).

211121012223 is a wasteful number, since it uses less digits than its factorization.

211121012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22930540 (or 22930534 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211121012223 its reverse (322210121112), we get a palindrome (533331133335).

The spelling of 211121012223 in words is "two hundred eleven billion, one hundred twenty-one million, twelve thousand, two hundred twenty-three".