221240230442312 has 32 divisors (see below), whose sum is σ = 433378566847800. Its totient is φ = 105748147008000.

The previous prime is 221240230442311. The next prime is 221240230442333. The reversal of 221240230442312 is 213244032042122.

It can be written as a sum of positive squares in 4 ways, for example, as 182176405431076 + 39063825011236 = 13497274^2 + 6250106^2 .

It is not an unprimeable number, because it can be changed into a prime (221240230442311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4720875989 + ... + 4720922852.

Almost surely, 2^{221240230442312} is an apocalyptic number.

It is an amenable number.

221240230442312 is a deficient number, since it is larger than the sum of its proper divisors (212138336405488).

221240230442312 is a wasteful number, since it uses less digits than its factorization.

221240230442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441798977 (or 9441798973 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 221240230442312 its reverse (213244032042122), we get a palindrome (434484262484434).

The spelling of 221240230442312 in words is "two hundred twenty-one trillion, two hundred forty billion, two hundred thirty million, four hundred forty-two thousand, three hundred twelve".