200121121211001 has 8 divisors (see below), whose sum is σ = 266849022283584. Its totient is φ = 133403650472880.

The previous prime is 200121121210999. The next prime is 200121121211003. The reversal of 200121121211001 is 100112121121002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200121121210999) and next prime (200121121211003).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200121121211001 - 2¹ = 200121121210999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200121121211003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2607538846 + ... + 2607615591.

It is an arithmetic number, because the mean of its divisors is an integer number (33356127785448).

Almost surely, 2^{200121121211001} is an apocalyptic number.

It is an amenable number.

200121121211001 is a deficient number, since it is larger than the sum of its proper divisors (66727901072583).

200121121211001 is a wasteful number, since it uses less digits than its factorization.

200121121211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215167231.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 200121121211001 its reverse (100112121121002), we get a palindrome (300233242332003).

The spelling of 200121121211001 in words is "two hundred trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one".