221223130112 has 22 divisors (see below), whose sum is σ = 442230224058. Its totient is φ = 110611564544.

The previous prime is 221223130097. The next prime is 221223130133. The reversal of 221223130112 is 211031322122.

It can be written as a sum of positive squares in only one way, i.e., 180101779456 + 41121350656 = 424384^2 + 202784^2 .

It is a super-2 number, since 2×221223130112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108018083 + ... + 108020130.

Almost surely, 2^221223130112 is an apocalyptic number.

It is an amenable number.

221223130112 is a deficient number, since it is larger than the sum of its proper divisors (221007093946).

221223130112 is an equidigital number, since it uses as much as digits as its factorization.

221223130112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216038233 (or 216038215 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221223130112 its reverse (211031322122), we get a palindrome (432254452234).

The spelling of 221223130112 in words is "two hundred twenty-one billion, two hundred twenty-three million, one hundred thirty thousand, one hundred twelve".