200121221011 has 8 divisors (see below), whose sum is σ = 207232584480. Its totient is φ = 193023899712.

The previous prime is 200121220991. The next prime is 200121221023. The reversal of 200121221011 is 110122121002.

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 200121221011 - 2⁹ = 200121220499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121220982 and 200121221000.

It is not an unprimeable number, because it can be changed into a prime (200121221071) 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, 3481530 + ... + 3538543.

It is an arithmetic number, because the mean of its divisors is an integer number (25904073060).

Almost surely, 2^200121221011 is an apocalyptic number.

200121221011 is a deficient number, since it is larger than the sum of its proper divisors (7111363469).

200121221011 is an equidigital number, since it uses as much as digits as its factorization.

200121221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021085.

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

Adding to 200121221011 its reverse (110122121002), we get a palindrome (310243342013).

The spelling of 200121221011 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, eleven".