221011011232 has 48 divisors (see below), whose sum is σ = 474933134592. Its totient is φ = 100404152320.

The previous prime is 221011011163. The next prime is 221011011233. The reversal of 221011011232 is 232110110122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (221011011233) 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 7 ways as a sum of consecutive naturals, for example, 469488 + ... + 813904.

It is an arithmetic number, because the mean of its divisors is an integer number (9894440304).

Almost surely, 2^221011011232 is an apocalyptic number.

221011011232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221011011232 is an abundant number, since it is smaller than the sum of its proper divisors (253922123360).

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

221011011232 is a wasteful number, since it uses less digits than its factorization.

221011011232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346261 (or 346253 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221011011232 its reverse (232110110122), we get a palindrome (453121121354).

The spelling of 221011011232 in words is "two hundred twenty-one billion, eleven million, eleven thousand, two hundred thirty-two".