22120001001200 has 60 divisors (see below), whose sum is σ = 53254249218240. Its totient is φ = 8829528506880.

The previous prime is 22120001001199. The next prime is 22120001001271. The reversal of 22120001001200 is 210010002122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57532829 + ... + 57916028.

It is an arithmetic number, because the mean of its divisors is an integer number (887570820304).

Almost surely, 2^{22120001001200} is an apocalyptic number.

22120001001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120001001200 is an abundant number, since it is smaller than the sum of its proper divisors (31134248217040).

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

22120001001200 is a wasteful number, since it uses less digits than its factorization.

22120001001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115449354 (or 115449343 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22120001001200 its reverse (210010002122), we get a palindrome (22330011003322).

The spelling of 22120001001200 in words is "twenty-two trillion, one hundred twenty billion, one million, one thousand, two hundred".