200121202011 has 16 divisors (see below), whose sum is σ = 267157654688. Its totient is φ = 133249536000.

The previous prime is 200121201997. The next prime is 200121202081. The reversal of 200121202011 is 110202121002.

It is not a de Polignac number, because 200121202011 - 2⁶ = 200121201947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121202081) 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, 10284051 + ... + 10303491.

It is an arithmetic number, because the mean of its divisors is an integer number (16697353418).

Almost surely, 2^200121202011 is an apocalyptic number.

200121202011 is a deficient number, since it is larger than the sum of its proper divisors (67036452677).

200121202011 is a wasteful number, since it uses less digits than its factorization.

200121202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23502.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 200121202011 its reverse (110202121002), we get a palindrome (310323323013).

The spelling of 200121202011 in words is "two hundred billion, one hundred twenty-one million, two hundred two thousand, eleven".