211202202011123 has 4 divisors (see below), whose sum is σ = 211395787898568. Its totient is φ = 211008616123680.

The previous prime is 211202202011117. The next prime is 211202202011173. The reversal of 211202202011123 is 321110202202112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211202202011123 is a prime.

It is a super-2 number, since 2×211202202011123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211202202011095 and 211202202011104.

It is not an unprimeable number, because it can be changed into a prime (211202202011173) 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, 96792942086 + ... + 96792944267.

It is an arithmetic number, because the mean of its divisors is an integer number (52848946974642).

Almost surely, 2^{211202202011123} is an apocalyptic number.

211202202011123 is a deficient number, since it is larger than the sum of its proper divisors (193585887445).

211202202011123 is a wasteful number, since it uses less digits than its factorization.

211202202011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193585887444.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211202202011123 its reverse (321110202202112), we get a palindrome (532312404213235).

The spelling of 211202202011123 in words is "two hundred eleven trillion, two hundred two billion, two hundred two million, eleven thousand, one hundred twenty-three".