211320223123 has 16 divisors (see below), whose sum is σ = 215820380160. Its totient is φ = 206852088096.

The previous prime is 211320223067. The next prime is 211320223139. The reversal of 211320223123 is 321322023112.

It is a cyclic number.

It is not a de Polignac number, because 211320223123 - 2³³ = 202730288531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211320223094 and 211320223103.

It is not an unprimeable number, because it can be changed into a prime (211320233123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19683465 + ... + 19694197.

It is an arithmetic number, because the mean of its divisors is an integer number (13488773760).

Almost surely, 2^211320223123 is an apocalyptic number.

211320223123 is a deficient number, since it is larger than the sum of its proper divisors (4500157037).

211320223123 is a wasteful number, since it uses less digits than its factorization.

211320223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12186.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 211320223123 its reverse (321322023112), we get a palindrome (532642246235).

The spelling of 211320223123 in words is "two hundred eleven billion, three hundred twenty million, two hundred twenty-three thousand, one hundred twenty-three".