200021220121012 has 24 divisors (see below), whose sum is σ = 377028982853600. Its totient is φ = 92543477606496.

The previous prime is 200021220121003. The next prime is 200021220121049. The reversal of 200021220121012 is 210121022120002.

It is a happy number.

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, 30602998587 + ... + 30603005122.

Almost surely, 2^{200021220121012} is an apocalyptic number.

It is an amenable number.

200021220121012 is a deficient number, since it is larger than the sum of its proper divisors (177007762732588).

200021220121012 is a wasteful number, since it uses less digits than its factorization.

200021220121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61206003775 (or 61206003773 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200021220121012 its reverse (210121022120002), we get a palindrome (410142242241014).

The spelling of 200021220121012 in words is "two hundred trillion, twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, twelve".