221123003112 has 64 divisors (see below), whose sum is σ = 670069713600. Its totient is φ = 67006969920.

The previous prime is 221123003093. The next prime is 221123003159. The reversal of 221123003112 is 211300321122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46530243 + ... + 46534994.

It is an arithmetic number, because the mean of its divisors is an integer number (10469839275).

Almost surely, 2^221123003112 is an apocalyptic number.

221123003112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221123003112 is an abundant number, since it is smaller than the sum of its proper divisors (448946710488).

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

221123003112 is a wasteful number, since it uses less digits than its factorization.

221123003112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93065263 (or 93065253 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221123003112 its reverse (211300321122), we get a palindrome (432423324234).

The spelling of 221123003112 in words is "two hundred twenty-one billion, one hundred twenty-three million, three thousand, one hundred twelve".