2101123213 has 8 divisors (see below), whose sum is σ = 2401768832. Its totient is φ = 1800598896.

The previous prime is 2101123207. The next prime is 2101123231. The reversal of 2101123213 is 3123211012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101123213 - 2²⁹ = 1564252301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101123253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10456 + ... + 65662.

It is an arithmetic number, because the mean of its divisors is an integer number (300221104).

Almost surely, 2^2101123213 is an apocalyptic number.

It is an amenable number.

2101123213 is a deficient number, since it is larger than the sum of its proper divisors (300645619).

2101123213 is an equidigital number, since it uses as much as digits as its factorization.

2101123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60651.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2101123213 is about 45838.0105698317. The cubic root of 2101123213 is about 1280.8074359080.

Adding to 2101123213 its reverse (3123211012), we get a palindrome (5224334225).

The spelling of 2101123213 in words is "two billion, one hundred one million, one hundred twenty-three thousand, two hundred thirteen".