112121221930 has 16 divisors (see below), whose sum is σ = 202029988104. Its totient is φ = 44801424640.

The previous prime is 112121221889. The next prime is 112121221931. The reversal of 112121221930 is 39122121211.

It can be written as a sum of positive squares in 4 ways, for example, as 64968402321 + 47152819609 = 254889^2 + 217147^2 .

It is a junction number, because it is equal to n+sod(n) for n = 112121221895 and 112121221904.

It is not an unprimeable number, because it can be changed into a prime (112121221931) 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 7 ways as a sum of consecutive naturals, for example, 5873011 + ... + 5892070.

Almost surely, 2^112121221930 is an apocalyptic number.

112121221930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

112121221930 is a deficient number, since it is larger than the sum of its proper divisors (89908766174).

112121221930 is a wasteful number, since it uses less digits than its factorization.

112121221930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11766041.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 112121221930 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, nine hundred thirty".