20021102221211 has 32 divisors (see below), whose sum is σ = 26570910912000. Its totient is φ = 14641114072320.

The previous prime is 20021102221201. The next prime is 20021102221223. The reversal of 20021102221211 is 11212220112002.

It is a cyclic number.

It is not a de Polignac number, because 20021102221211 - 2⁶ = 20021102221147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20021102221211.

It is not an unprimeable number, because it can be changed into a prime (20021102221201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141143561 + ... + 141285338.

It is an arithmetic number, because the mean of its divisors is an integer number (830340966000).

Almost surely, 2^{20021102221211} is an apocalyptic number.

20021102221211 is a deficient number, since it is larger than the sum of its proper divisors (6549808690789).

20021102221211 is a wasteful number, since it uses less digits than its factorization.

20021102221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282428979.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20021102221211 its reverse (11212220112002), we get a palindrome (31233322333213).

The spelling of 20021102221211 in words is "twenty trillion, twenty-one billion, one hundred two million, two hundred twenty-one thousand, two hundred eleven".