20021020222111 has 8 divisors (see below), whose sum is σ = 20714234133600. Its totient is φ = 19327995237600.

The previous prime is 20021020222057. The next prime is 20021020222157. The reversal of 20021020222111 is 11122202012002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20021020222111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021020222171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47016115 + ... + 47440036.

It is an arithmetic number, because the mean of its divisors is an integer number (2589279266700).

Almost surely, 2^{20021020222111} is an apocalyptic number.

20021020222111 is a deficient number, since it is larger than the sum of its proper divisors (693213911489).

20021020222111 is an equidigital number, since it uses as much as digits as its factorization.

20021020222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94463489.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021020222111 its reverse (11122202012002), we get a palindrome (31143222234113).

The spelling of 20021020222111 in words is "twenty trillion, twenty-one billion, twenty million, two hundred twenty-two thousand, one hundred eleven".