2120111213 has 4 divisors (see below), whose sum is σ = 2312848608. Its totient is φ = 1927373820.

The previous prime is 2120111183. The next prime is 2120111221. The reversal of 2120111213 is 3121110212.

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 2120111213 - 2⁸ = 2120110957 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 (2120111233) 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, 96368681 + ... + 96368702.

It is an arithmetic number, because the mean of its divisors is an integer number (578212152).

Almost surely, 2^2120111213 is an apocalyptic number.

It is an amenable number.

2120111213 is a deficient number, since it is larger than the sum of its proper divisors (192737395).

2120111213 is a wasteful number, since it uses less digits than its factorization.

2120111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192737394.

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

The square root of 2120111213 is about 46044.6654130530. The cubic root of 2120111213 is about 1284.6541208009.

Adding to 2120111213 its reverse (3121110212), we get a palindrome (5241221425).

The spelling of 2120111213 in words is "two billion, one hundred twenty million, one hundred eleven thousand, two hundred thirteen".