202100123213 has 4 divisors (see below), whose sum is σ = 202814258208. Its totient is φ = 201385988220.

The previous prime is 202100123201. The next prime is 202100123237. The reversal of 202100123213 is 312321001202.

202100123213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202100123213 - 2⁶ = 202100123149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202100123191 and 202100123200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100123273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357067073 + ... + 357067638.

It is an arithmetic number, because the mean of its divisors is an integer number (50703564552).

Almost surely, 2^202100123213 is an apocalyptic number.

It is an amenable number.

202100123213 is a deficient number, since it is larger than the sum of its proper divisors (714134995).

202100123213 is an equidigital number, since it uses as much as digits as its factorization.

202100123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714134994.

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

Adding to 202100123213 its reverse (312321001202), we get a palindrome (514421124415).

The spelling of 202100123213 in words is "two hundred two billion, one hundred million, one hundred twenty-three thousand, two hundred thirteen".