211101222123 has 48 divisors (see below), whose sum is σ = 347662879200. Its totient is φ = 122254755840.

The previous prime is 211101222113. The next prime is 211101222149. The reversal of 211101222123 is 321222101112.

It is not a de Polignac number, because 211101222123 - 2²² = 211097027819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211101222096 and 211101222105.

It is not an unprimeable number, because it can be changed into a prime (211101222113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100528 + ... + 657501.

It is an arithmetic number, because the mean of its divisors is an integer number (7242976650).

Almost surely, 2^211101222123 is an apocalyptic number.

211101222123 is a deficient number, since it is larger than the sum of its proper divisors (136561657077).

211101222123 is a wasteful number, since it uses less digits than its factorization.

211101222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758172 (or 758169 counting only the distinct ones).

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

Adding to 211101222123 its reverse (321222101112), we get a palindrome (532323323235).

The spelling of 211101222123 in words is "two hundred eleven billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-three".