200121011101 has 4 divisors (see below), whose sum is σ = 218313830304. Its totient is φ = 181928191900.

The previous prime is 200121011099. The next prime is 200121011141. The reversal of 200121011101 is 101110121002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200121011101 - 2¹ = 200121011099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121011141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9096409585 + ... + 9096409606.

It is an arithmetic number, because the mean of its divisors is an integer number (54578457576).

Almost surely, 2^200121011101 is an apocalyptic number.

It is an amenable number.

200121011101 is a deficient number, since it is larger than the sum of its proper divisors (18192819203).

200121011101 is a wasteful number, since it uses less digits than its factorization.

200121011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18192819202.

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

Adding to 200121011101 its reverse (101110121002), we get a palindrome (301231132103).

The spelling of 200121011101 in words is "two hundred billion, one hundred twenty-one million, eleven thousand, one hundred one".