210221011001211 has 16 divisors (see below), whose sum is σ = 320337439509504. Its totient is φ = 120126044185344.

The previous prime is 210221011001153. The next prime is 210221011001219. The reversal of 210221011001211 is 112100110122012.

It is a happy number.

It is not a de Polignac number, because 210221011001211 - 2¹⁵ = 210221010968443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210221011001219) 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, 353131 + ... + 20507723.

It is an arithmetic number, because the mean of its divisors is an integer number (20021089969344).

Almost surely, 2^{210221011001211} is an apocalyptic number.

210221011001211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

210221011001211 is a deficient number, since it is larger than the sum of its proper divisors (110116428508293).

210221011001211 is a wasteful number, since it uses less digits than its factorization.

210221011001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20651290.

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

Adding to 210221011001211 its reverse (112100110122012), we get a palindrome (322321121123223).

The spelling of 210221011001211 in words is "two hundred ten trillion, two hundred twenty-one billion, eleven million, one thousand, two hundred eleven".