111321320210 has 32 divisors (see below), whose sum is σ = 206451711792. Its totient is φ = 43186590720.

The previous prime is 111321320161. The next prime is 111321320219. The reversal of 111321320210 is 12023123111.

It can be written as a sum of positive squares in 8 ways, for example, as 73907315881 + 37414004329 = 271859^2 + 193427^2 .

It is not an unprimeable number, because it can be changed into a prime (111321320219) 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 15 ways as a sum of consecutive naturals, for example, 364811 + ... + 596430.

Almost surely, 2^111321320210 is an apocalyptic number.

111321320210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111321320210 is a deficient number, since it is larger than the sum of its proper divisors (95130391582).

111321320210 is a wasteful number, since it uses less digits than its factorization.

111321320210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961598.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111321320210 its reverse (12023123111), we get a palindrome (123344443321).

The spelling of 111321320210 in words is "one hundred eleven billion, three hundred twenty-one million, three hundred twenty thousand, two hundred ten".