200100021212021 has 16 divisors (see below), whose sum is σ = 236763944956800. Its totient is φ = 165465273640128.

The previous prime is 200100021211793. The next prime is 200100021212081. The reversal of 200100021212021 is 120212120001002.

It is a de Polignac number, because none of the positive numbers 2^k-200100021212021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200100021211987 and 200100021212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200100021212081) 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, 400773455 + ... + 401272428.

It is an arithmetic number, because the mean of its divisors is an integer number (14797746559800).

Almost surely, 2^{200100021212021} is an apocalyptic number.

It is an amenable number.

200100021212021 is a deficient number, since it is larger than the sum of its proper divisors (36663923744779).

200100021212021 is a wasteful number, since it uses less digits than its factorization.

200100021212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802047148.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200100021212021 its reverse (120212120001002), we get a palindrome (320312141213023).

The spelling of 200100021212021 in words is "two hundred trillion, one hundred billion, twenty-one million, two hundred twelve thousand, twenty-one".