211212022111123 has 4 divisors (see below), whose sum is σ = 230413115030328. Its totient is φ = 192010929191920.

The previous prime is 211212022111099. The next prime is 211212022111199. The reversal of 211212022111123 is 321111220212112.

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 211212022111123 - 2³³ = 211203432176531 is a prime.

It is a super-3 number, since 3×211212022111123³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211212022111094 and 211212022111103.

It is not an unprimeable number, because it can be changed into a prime (211212022117123) 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, 9600546459586 + ... + 9600546459607.

It is an arithmetic number, because the mean of its divisors is an integer number (57603278757582).

Almost surely, 2^{211212022111123} is an apocalyptic number.

211212022111123 is a deficient number, since it is larger than the sum of its proper divisors (19201092919205).

211212022111123 is a wasteful number, since it uses less digits than its factorization.

211212022111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19201092919204.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 211212022111123 its reverse (321111220212112), we get a palindrome (532323242323235).

The spelling of 211212022111123 in words is "two hundred eleven trillion, two hundred twelve billion, twenty-two million, one hundred eleven thousand, one hundred twenty-three".