210221011210011 has 16 divisors (see below), whose sum is σ = 296784032358528. Its totient is φ = 131902744784000.

The previous prime is 210221011210009. The next prime is 210221011210031. The reversal of 210221011210011 is 110012110122012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210221011210011 - 2¹ = 210221011210009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210221011210031) 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, 896836 + ... + 20524286.

It is an arithmetic number, because the mean of its divisors is an integer number (18549002022408).

Almost surely, 2^{210221011210011} is an apocalyptic number.

210221011210011 is a deficient number, since it is larger than the sum of its proper divisors (86563021148517).

210221011210011 is a wasteful number, since it uses less digits than its factorization.

210221011210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19837482.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210221011210011 its reverse (110012110122012), we get a palindrome (320233121332023).

The spelling of 210221011210011 in words is "two hundred ten trillion, two hundred twenty-one billion, eleven million, two hundred ten thousand, eleven".