221012101232 has 20 divisors (see below), whose sum is σ = 461150250120. Its totient is φ = 102005585088.

The previous prime is 221012101223. The next prime is 221012101237. The reversal of 221012101232 is 232101210122.

It is a self number, because there is not a number n which added to its sum of digits gives 221012101232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012101237) 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, 531278882 + ... + 531279297.

It is an arithmetic number, because the mean of its divisors is an integer number (23057512506).

Almost surely, 2^221012101232 is an apocalyptic number.

It is an amenable number.

221012101232 is an abundant number, since it is smaller than the sum of its proper divisors (240138148888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221012101232 is a wasteful number, since it uses less digits than its factorization.

221012101232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062558200 (or 1062558194 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221012101232 its reverse (232101210122), we get a palindrome (453113311354).

The spelling of 221012101232 in words is "two hundred twenty-one billion, twelve million, one hundred one thousand, two hundred thirty-two".