2112204453400 has 48 divisors (see below), whose sum is σ = 5025081778200. Its totient is φ = 825233364480.

The previous prime is 2112204453397. The next prime is 2112204453409. The reversal of 2112204453400 is 43544022112.

It is a super-2 number, since 2×2112204453400² (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 (2112204453409) 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, 122793985 + ... + 122811184.

Almost surely, 2^{2112204453400} is an apocalyptic number.

2112204453400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112204453400 is an abundant number, since it is smaller than the sum of its proper divisors (2912877324800).

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

2112204453400 is a wasteful number, since it uses less digits than its factorization.

2112204453400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245605228 (or 245605219 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 2112204453400 its reverse (43544022112), we get a palindrome (2155748475512).

The spelling of 2112204453400 in words is "two trillion, one hundred twelve billion, two hundred four million, four hundred fifty-three thousand, four hundred".