200021121210001 has 64 divisors (see below), whose sum is σ = 252741178368000. Its totient is φ = 154077492384000.

The previous prime is 200021121209999. The next prime is 200021121210059. The reversal of 200021121210001 is 100012121120002.

200021121210001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 200021121210001 - 2¹ = 200021121209999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (200021121210061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 844747375 + ... + 844984123.

It is an arithmetic number, because the mean of its divisors is an integer number (3949080912000).

Almost surely, 2^{200021121210001} is an apocalyptic number.

It is an amenable number.

200021121210001 is a deficient number, since it is larger than the sum of its proper divisors (52720057157999).

200021121210001 is a wasteful number, since it uses less digits than its factorization.

200021121210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237854.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200021121210001 its reverse (100012121120002), we get a palindrome (300033242330003).

The spelling of 200021121210001 in words is "two hundred trillion, twenty-one billion, one hundred twenty-one million, two hundred ten thousand, one".