200120121021001 has 8 divisors (see below), whose sum is σ = 206646768244224. Its totient is φ = 193597921263360.

The previous prime is 200120121020999. The next prime is 200120121021011. The reversal of 200120121021001 is 100120121021002.

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

It is a cyclic number.

It is not a de Polignac number, because 200120121021001 - 2¹ = 200120121020999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200120121021011) 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, 1111774936 + ... + 1111954921.

It is an arithmetic number, because the mean of its divisors is an integer number (25830846030528).

Almost surely, 2^{200120121021001} is an apocalyptic number.

It is an amenable number.

200120121021001 is a deficient number, since it is larger than the sum of its proper divisors (6526647223223).

200120121021001 is a wasteful number, since it uses less digits than its factorization.

200120121021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223732791.

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

Adding to 200120121021001 its reverse (100120121021002), we get a palindrome (300240242042003).

Subtracting from 200120121021001 its reverse (100120121021002), we obtain a palindrome (99999999999999).

The spelling of 200120121021001 in words is "two hundred trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, one".