200211121210021 has 8 divisors (see below), whose sum is σ = 203150432283480. Its totient is φ = 197292293140992.

The previous prime is 200211121209977. The next prime is 200211121210039. The reversal of 200211121210021 is 120012121112002.

It can be written as a sum of positive squares in 4 ways, for example, as 2913982147521 + 197297139062500 = 1707039^2 + 14046250^2 .

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 200211121210021 - 2¹¹ = 200211121207973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200211121209977 and 200211121210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211121214021) 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, 5120731416 + ... + 5120770513.

It is an arithmetic number, because the mean of its divisors is an integer number (25393804035435).

Almost surely, 2^{200211121210021} is an apocalyptic number.

It is an amenable number.

200211121210021 is a deficient number, since it is larger than the sum of its proper divisors (2939311073459).

200211121210021 is a wasteful number, since it uses less digits than its factorization.

200211121210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241502215.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 200211121210021 its reverse (120012121112002), we get a palindrome (320223242322023).

The spelling of 200211121210021 in words is "two hundred trillion, two hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, twenty-one".