211202200123 has 4 divisors (see below), whose sum is σ = 218485034640. Its totient is φ = 203919365608.

The previous prime is 211202200087. The next prime is 211202200247. The reversal of 211202200123 is 321002202112.

It is a happy number.

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-211202200123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211202200097 and 211202200106.

It is not an unprimeable number, because it can be changed into a prime (211202200723) 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, 3641417215 + ... + 3641417272.

It is an arithmetic number, because the mean of its divisors is an integer number (54621258660).

Almost surely, 2^211202200123 is an apocalyptic number.

211202200123 is a deficient number, since it is larger than the sum of its proper divisors (7282834517).

211202200123 is an equidigital number, since it uses as much as digits as its factorization.

211202200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282834516.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 211202200123 its reverse (321002202112), we get a palindrome (532204402235).

The spelling of 211202200123 in words is "two hundred eleven billion, two hundred two million, two hundred thousand, one hundred twenty-three".