12221123000 has 64 divisors (see below), whose sum is σ = 30102602400. Its totient is φ = 4631155200.

The previous prime is 12221122997. The next prime is 12221123017. The reversal of 12221123000 is 32112221.

It is a happy number.

It is a super-2 number, since 2×12221123000² (a number of 21 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 in 15 ways as a sum of consecutive naturals, for example, 302609 + ... + 340608.

Almost surely, 2^12221123000 is an apocalyptic number.

12221123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221123000 is an abundant number, since it is smaller than the sum of its proper divisors (17881479400).

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

12221123000 is a wasteful number, since it uses less digits than its factorization.

12221123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643257 (or 643243 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12221123000 its reverse (32112221), we get a palindrome (12253235221).

The spelling of 12221123000 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-three thousand".