1212200112112 has 40 divisors (see below), whose sum is σ = 2579118175872. Its totient is φ = 547351032000.

The previous prime is 1212200112047. The next prime is 1212200112121. The reversal of 1212200112112 is 2112110022121.

It is a super-2 number, since 2×1212200112112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22779718 + ... + 22832869.

Almost surely, 2^{1212200112112} is an apocalyptic number.

It is an amenable number.

1212200112112 is an abundant number, since it is smaller than the sum of its proper divisors (1366918063760).

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

1212200112112 is a wasteful number, since it uses less digits than its factorization.

1212200112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45612757 (or 45612751 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212200112112 its reverse (2112110022121), we get a palindrome (3324310134233).

The spelling of 1212200112112 in words is "one trillion, two hundred twelve billion, two hundred million, one hundred twelve thousand, one hundred twelve".