221332001012 has 24 divisors (see below), whose sum is σ = 387674789376. Its totient is φ = 110567828448.

The previous prime is 221332000993. The next prime is 221332001047. The reversal of 221332001012 is 210100233122.

It is a congruent number.

It is an unprimeable number.

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, 27896198 + ... + 27904130.

It is an arithmetic number, because the mean of its divisors is an integer number (16153116224).

Almost surely, 2^221332001012 is an apocalyptic number.

It is an amenable number.

221332001012 is a deficient number, since it is larger than the sum of its proper divisors (166342788364).

221332001012 is a wasteful number, since it uses less digits than its factorization.

221332001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247 (or 13245 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221332001012 its reverse (210100233122), we get a palindrome (431432234134).

The spelling of 221332001012 in words is "two hundred twenty-one billion, three hundred thirty-two million, one thousand, twelve".