221020110232 has 32 divisors (see below), whose sum is σ = 417841920000. Its totient is φ = 109599098400.

The previous prime is 221020110221. The next prime is 221020110257. The reversal of 221020110232 is 232011020122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287269 + ... + 724267.

It is an arithmetic number, because the mean of its divisors is an integer number (13057560000).

Almost surely, 2^221020110232 is an apocalyptic number.

It is an amenable number.

221020110232 is a deficient number, since it is larger than the sum of its proper divisors (196821809768).

221020110232 is a wasteful number, since it uses less digits than its factorization.

221020110232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437527 (or 437523 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221020110232 its reverse (232011020122), we get a palindrome (453031130354).

The spelling of 221020110232 in words is "two hundred twenty-one billion, twenty million, one hundred ten thousand, two hundred thirty-two".