2112101213 has 4 divisors (see below), whose sum is σ = 2112202560. Its totient is φ = 2111999868.

The previous prime is 2112101203. The next prime is 2112101221. The reversal of 2112101213 is 3121012112.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2112101213 - 2⁴ = 2112101197 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 (2112101203) 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, 6683 + ... + 65336.

It is an arithmetic number, because the mean of its divisors is an integer number (528050640).

Almost surely, 2^2112101213 is an apocalyptic number.

It is an amenable number.

2112101213 is a deficient number, since it is larger than the sum of its proper divisors (101347).

2112101213 is an equidigital number, since it uses as much as digits as its factorization.

2112101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101346.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2112101213 is about 45957.6023417236. The cubic root of 2112101213 is about 1283.0342268838.

Adding to 2112101213 its reverse (3121012112), we get a palindrome (5233113325).

The spelling of 2112101213 in words is "two billion, one hundred twelve million, one hundred one thousand, two hundred thirteen".