221234101412 has 12 divisors (see below), whose sum is σ = 387165622620. Its totient is φ = 110615352096.

The previous prime is 221234101411. The next prime is 221234101421. The reversal of 221234101412 is 214101432122.

It can be written as a sum of positive squares in 2 ways, for example, as 19932921856 + 201301179556 = 141184^2 + 448666^2 .

It is not an unprimeable number, because it can be changed into a prime (221234101411) 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 3 ways as a sum of consecutive naturals, for example, 104843 + ... + 673394.

It is an arithmetic number, because the mean of its divisors is an integer number (32263801885).

Almost surely, 2^221234101412 is an apocalyptic number.

It is an amenable number.

221234101412 is a deficient number, since it is larger than the sum of its proper divisors (165931521208).

221234101412 is a wasteful number, since it uses less digits than its factorization.

221234101412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849310 (or 849308 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221234101412 its reverse (214101432122), we get a palindrome (435335533534).

The spelling of 221234101412 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred one thousand, four hundred twelve".