200111121001 has 16 divisors (see below), whose sum is σ = 219346767360. Its totient is φ = 181049915520.

The previous prime is 200111120977. The next prime is 200111121013. The reversal of 200111121001 is 100121111002.

It is a cyclic number.

It is not a de Polignac number, because 200111121001 - 2¹⁹ = 200110596713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200111121061) 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, 9981055 + ... + 10001083.

It is an arithmetic number, because the mean of its divisors is an integer number (13709172960).

Almost surely, 2^200111121001 is an apocalyptic number.

It is an amenable number.

200111121001 is a deficient number, since it is larger than the sum of its proper divisors (19235646359).

200111121001 is a wasteful number, since it uses less digits than its factorization.

200111121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24336.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 200111121001 its reverse (100121111002), we get a palindrome (300232232003).

Subtracting from 200111121001 its reverse (100121111002), we obtain a palindrome (99990009999).

The spelling of 200111121001 in words is "two hundred billion, one hundred eleven million, one hundred twenty-one thousand, one".