200121102011 has 4 divisors (see below), whose sum is σ = 201991392792. Its totient is φ = 198250811232.

The previous prime is 200121101987. The next prime is 200121102079. The reversal of 200121102011 is 110201121002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200121102011 - 2¹⁴ = 200121085627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121101983 and 200121102001.

It is not an unprimeable number, because it can be changed into a prime (200121102091) 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, 935145230 + ... + 935145443.

It is an arithmetic number, because the mean of its divisors is an integer number (50497848198).

Almost surely, 2^200121102011 is an apocalyptic number.

200121102011 is a deficient number, since it is larger than the sum of its proper divisors (1870290781).

200121102011 is a wasteful number, since it uses less digits than its factorization.

200121102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870290780.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 200121102011 its reverse (110201121002), we get a palindrome (310322223013).

The spelling of 200121102011 in words is "two hundred billion, one hundred twenty-one million, one hundred two thousand, eleven".