2102321111 has 4 divisors (see below), whose sum is σ = 2293441224. Its totient is φ = 1911201000.

The previous prime is 2102321071. The next prime is 2102321113. The reversal of 2102321111 is 1111232012.

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 2102321111 - 2¹⁴ = 2102304727 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 (2102321113) 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, 95560040 + ... + 95560061.

It is an arithmetic number, because the mean of its divisors is an integer number (573360306).

Almost surely, 2^2102321111 is an apocalyptic number.

2102321111 is a deficient number, since it is larger than the sum of its proper divisors (191120113).

2102321111 is a wasteful number, since it uses less digits than its factorization.

2102321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191120112.

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

The square root of 2102321111 is about 45851.0753527112. The cubic root of 2102321111 is about 1281.0507954555.

Adding to 2102321111 its reverse (1111232012), we get a palindrome (3213553123).

The spelling of 2102321111 in words is "two billion, one hundred two million, three hundred twenty-one thousand, one hundred eleven".