210011021221211 has 16 divisors (see below), whose sum is σ = 243393806868480. Its totient is φ = 177473554040160.

The previous prime is 210011021221171. The next prime is 210011021221271. The reversal of 210011021221211 is 112122120110012.

It is not a de Polignac number, because 210011021221211 - 2¹⁸ = 210011020959067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210011021221211.

It is not an unprimeable number, because it can be changed into a prime (210011021221271) 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, 294020870 + ... + 294734276.

It is an arithmetic number, because the mean of its divisors is an integer number (15212112929280).

Almost surely, 2^{210011021221211} is an apocalyptic number.

210011021221211 is a deficient number, since it is larger than the sum of its proper divisors (33382785647269).

210011021221211 is an equidigital number, since it uses as much as digits as its factorization.

210011021221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305794.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210011021221211 its reverse (112122120110012), we get a palindrome (322133141331223).

The spelling of 210011021221211 in words is "two hundred ten trillion, eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred eleven".