200121112001001 has 32 divisors (see below), whose sum is σ = 282041998479360. Its totient is φ = 125964618683904.

The previous prime is 200121112000967. The next prime is 200121112001003. The reversal of 200121112001001 is 100100211121002.

It is not a de Polignac number, because 200121112001001 - 2¹⁸ = 200121111738857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200121112001003) 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, 36909345 + ... + 41982638.

It is an arithmetic number, because the mean of its divisors is an integer number (8813812452480).

Almost surely, 2^{200121112001001} is an apocalyptic number.

It is an amenable number.

200121112001001 is a deficient number, since it is larger than the sum of its proper divisors (81920886478359).

200121112001001 is a wasteful number, since it uses less digits than its factorization.

200121112001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78892485.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 200121112001001 its reverse (100100211121002), we get a palindrome (300221323122003).

The spelling of 200121112001001 in words is "two hundred trillion, one hundred twenty-one billion, one hundred twelve million, one thousand, one".