221103231132 has 48 divisors (see below), whose sum is σ = 592403017472. Its totient is φ = 62872951680.

The previous prime is 221103231109. The next prime is 221103231137. The reversal of 221103231132 is 231132301122.

It is a super-2 number, since 2×221103231132² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 221103231099 and 221103231108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221103231137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6219673 + ... + 6255120.

Almost surely, 2^221103231132 is an apocalyptic number.

It is an amenable number.

221103231132 is an abundant number, since it is smaller than the sum of its proper divisors (371299786340).

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

221103231132 is a wasteful number, since it uses less digits than its factorization.

221103231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12475018 (or 12475016 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221103231132 its reverse (231132301122), we get a palindrome (452235532254).

The spelling of 221103231132 in words is "two hundred twenty-one billion, one hundred three million, two hundred thirty-one thousand, one hundred thirty-two".