221000321132 has 12 divisors (see below), whose sum is σ = 387631545840. Its totient is φ = 110248450896.

The previous prime is 221000321089. The next prime is 221000321159. The reversal of 221000321132 is 231123000122.

It is a super-2 number, since 2×221000321132² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221000321132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62925443 + ... + 62928954.

It is an arithmetic number, because the mean of its divisors is an integer number (32302628820).

Almost surely, 2^221000321132 is an apocalyptic number.

It is an amenable number.

221000321132 is a deficient number, since it is larger than the sum of its proper divisors (166631224708).

221000321132 is a wasteful number, since it uses less digits than its factorization.

221000321132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125854840 (or 125854838 counting only the distinct ones).

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

Adding to 221000321132 its reverse (231123000122), we get a palindrome (452123321254).

The spelling of 221000321132 in words is "two hundred twenty-one billion, three hundred twenty-one thousand, one hundred thirty-two".