210221220122011 has 16 divisors (see below), whose sum is σ = 240315387540480. Its totient is φ = 180142697164320.

The previous prime is 210221220121987. The next prime is 210221220122029. The reversal of 210221220122011 is 110221022122012.

It is a cyclic number.

It is not a de Polignac number, because 210221220122011 - 2¹³ = 210221220113819 is a prime.

It is a super-2 number, since 2×210221220122011² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210221220122011.

It is not an unprimeable number, because it can be changed into a prime (210221220122071) 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, 855335601 + ... + 855581341.

It is an arithmetic number, because the mean of its divisors is an integer number (15019711721280).

Almost surely, 2^{210221220122011} is an apocalyptic number.

210221220122011 is a deficient number, since it is larger than the sum of its proper divisors (30094167418469).

210221220122011 is a wasteful number, since it uses less digits than its factorization.

210221220122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277074.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210221220122011 its reverse (110221022122012), we get a palindrome (320442242244023).

The spelling of 210221220122011 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, eleven".