2321220111 has 24 divisors (see below), whose sum is σ = 3650984064. Its totient is φ = 1307723760.

The previous prime is 2321220079. The next prime is 2321220113. The reversal of 2321220111 is 1110221232.

It is not a de Polignac number, because 2321220111 - 2⁵ = 2321220079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321220113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100765 + ... + 121638.

It is an arithmetic number, because the mean of its divisors is an integer number (152124336).

Almost surely, 2^2321220111 is an apocalyptic number.

2321220111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2321220111 is a deficient number, since it is larger than the sum of its proper divisors (1329763953).

2321220111 is a wasteful number, since it uses less digits than its factorization.

2321220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222491 (or 222484 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2321220111 is about 48179.0422383011. The cubic root of 2321220111 is about 1324.0532191637.

Adding to 2321220111 its reverse (1110221232), we get a palindrome (3431441343).

The spelling of 2321220111 in words is "two billion, three hundred twenty-one million, two hundred twenty thousand, one hundred eleven".