213202230123 has 4 divisors (see below), whose sum is σ = 284269640168. Its totient is φ = 142134820080.

The previous prime is 213202230107. The next prime is 213202230181. The reversal of 213202230123 is 321032202312.

It is a happy number.

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

It is not a de Polignac number, because 213202230123 - 2⁴ = 213202230107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213202230123.

It is not an unprimeable number, because it can be changed into a prime (213202230023) 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, 35533705018 + ... + 35533705023.

It is an arithmetic number, because the mean of its divisors is an integer number (71067410042).

Almost surely, 2^213202230123 is an apocalyptic number.

213202230123 is a deficient number, since it is larger than the sum of its proper divisors (71067410045).

213202230123 is an equidigital number, since it uses as much as digits as its factorization.

213202230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71067410044.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 213202230123 its reverse (321032202312), we get a palindrome (534234432435).

The spelling of 213202230123 in words is "two hundred thirteen billion, two hundred two million, two hundred thirty thousand, one hundred twenty-three".