200121200222101 has 16 divisors (see below), whose sum is σ = 211215619346688. Its totient is φ = 189232097824000.

The previous prime is 200121200222063. The next prime is 200121200222107. The reversal of 200121200222101 is 101222002121002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200121200222101 - 2¹⁹ = 200121199697813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121200222107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65071780 + ... + 68077741.

It is an arithmetic number, because the mean of its divisors is an integer number (13200976209168).

Almost surely, 2^{200121200222101} is an apocalyptic number.

It is an amenable number.

200121200222101 is a deficient number, since it is larger than the sum of its proper divisors (11094419124587).

200121200222101 is a wasteful number, since it uses less digits than its factorization.

200121200222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133150292.

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

Adding to 200121200222101 its reverse (101222002121002), we get a palindrome (301343202343103).

The spelling of 200121200222101 in words is "two hundred trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, one hundred one".