12222100221100 has 72 divisors (see below), whose sum is σ = 33066336619008. Its totient is φ = 3809485780800.

The previous prime is 12222100221061. The next prime is 12222100221103. The reversal of 12222100221100 is 112200122221.

It is a happy number.

It is a super-2 number, since 2×12222100221100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12222100221103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 793635172 + ... + 793650571.

It is an arithmetic number, because the mean of its divisors is an integer number (459254675264).

Almost surely, 2^{12222100221100} is an apocalyptic number.

12222100221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222100221100 is an abundant number, since it is smaller than the sum of its proper divisors (20844236397908).

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

12222100221100 is a wasteful number, since it uses less digits than its factorization.

12222100221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587285775 (or 1587285768 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222100221100 its reverse (112200122221), we get a palindrome (12334300343321).

The spelling of 12222100221100 in words is "twelve trillion, two hundred twenty-two billion, one hundred million, two hundred twenty-one thousand, one hundred".