2112221001200 has 60 divisors (see below), whose sum is σ = 5085571684128. Its totient is φ = 843063513600.

The previous prime is 2112221001197. The next prime is 2112221001203. The reversal of 2112221001200 is 21001222112.

It is an interprime number because it is at equal distance from previous prime (2112221001197) and next prime (2112221001203).

It is a super-2 number, since 2×2112221001200² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112221001203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5517341 + ... + 5887740.

Almost surely, 2^{2112221001200} is an apocalyptic number.

2112221001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112221001200 is an abundant number, since it is smaller than the sum of its proper divisors (2973350682928).

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

2112221001200 is a wasteful number, since it uses less digits than its factorization.

2112221001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11405562 (or 11405551 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112221001200 its reverse (21001222112), we get a palindrome (2133222223312).

The spelling of 2112221001200 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, one thousand, two hundred".