20020220221211 has 16 divisors (see below), whose sum is σ = 23226891399936. Its totient is φ = 16900322430816.

The previous prime is 20020220221181. The next prime is 20020220221231. The reversal of 20020220221211 is 11212202202002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20020220221211 - 2²² = 20020216026907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020220221211.

It is not an unprimeable number, because it can be changed into a prime (20020220221231) 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, 2606681 + ... + 6843626.

It is an arithmetic number, because the mean of its divisors is an integer number (1451680712496).

Almost surely, 2^{20020220221211} is an apocalyptic number.

20020220221211 is a deficient number, since it is larger than the sum of its proper divisors (3206671178725).

20020220221211 is an equidigital number, since it uses as much as digits as its factorization.

20020220221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454898.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20020220221211 its reverse (11212202202002), we get a palindrome (31232422423213).

The spelling of 20020220221211 in words is "twenty trillion, twenty billion, two hundred twenty million, two hundred twenty-one thousand, two hundred eleven".