2112121200012 has 24 divisors (see below), whose sum is σ = 4928370167616. Its totient is φ = 704027918928.

The previous prime is 2112121200011. The next prime is 2112121200031. The reversal of 2112121200012 is 2100021212112.

It is a super-2 number, since 2×2112121200012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112121199964 and 2112121200000.

It is not an unprimeable number, because it can be changed into a prime (2112121200011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841798 + ... + 2221005.

It is an arithmetic number, because the mean of its divisors is an integer number (205348756984).

Almost surely, 2^{2112121200012} is an apocalyptic number.

It is an amenable number.

2112121200012 is an abundant number, since it is smaller than the sum of its proper divisors (2816248967604).

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

2112121200012 is a wasteful number, since it uses less digits than its factorization.

2112121200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120277 (or 3120275 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2112121200012 its reverse (2100021212112), we get a palindrome (4212142412124).

The spelling of 2112121200012 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred thousand, twelve".