212002013123 has 4 divisors (see below), whose sum is σ = 212881689768. Its totient is φ = 211122336480.

The previous prime is 212002013077. The next prime is 212002013299. The reversal of 212002013123 is 321310200212.

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 212002013123 - 2⁶ = 212002013059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002013723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439837961 + ... + 439838442.

It is an arithmetic number, because the mean of its divisors is an integer number (53220422442).

Almost surely, 2^212002013123 is an apocalyptic number.

212002013123 is a deficient number, since it is larger than the sum of its proper divisors (879676645).

212002013123 is an equidigital number, since it uses as much as digits as its factorization.

212002013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879676644.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212002013123 its reverse (321310200212), we get a palindrome (533312213335).

The spelling of 212002013123 in words is "two hundred twelve billion, two million, thirteen thousand, one hundred twenty-three".