2121200220012 has 96 divisors (see below), whose sum is σ = 5233393804800. Its totient is φ = 667803502080.

The previous prime is 2121200220011. The next prime is 2121200220023. The reversal of 2121200220012 is 2100220021212.

It is a junction number, because it is equal to n+sod(n) for n = 2121200219973 and 2121200220000.

It is not an unprimeable number, because it can be changed into a prime (2121200220011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3329823 + ... + 3915369.

It is an arithmetic number, because the mean of its divisors is an integer number (54514518800).

Almost surely, 2^{2121200220012} is an apocalyptic number.

It is an amenable number.

2121200220012 is an abundant number, since it is smaller than the sum of its proper divisors (3112193584788).

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

2121200220012 is a wasteful number, since it uses less digits than its factorization.

2121200220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585831 (or 585829 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2121200220012 its reverse (2100220021212), we get a palindrome (4221420241224).

The spelling of 2121200220012 in words is "two trillion, one hundred twenty-one billion, two hundred million, two hundred twenty thousand, twelve".