20021112202011 has 4 divisors (see below), whose sum is σ = 26694816269352. Its totient is φ = 13347408134672.

The previous prime is 20021112201953. The next prime is 20021112202033. The reversal of 20021112202011 is 11020221112002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20021112202011 - 2²¹ = 20021110104859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021112202061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336852033666 + ... + 3336852033671.

It is an arithmetic number, because the mean of its divisors is an integer number (6673704067338).

Almost surely, 2^{20021112202011} is an apocalyptic number.

20021112202011 is a deficient number, since it is larger than the sum of its proper divisors (6673704067341).

20021112202011 is an equidigital number, since it uses as much as digits as its factorization.

20021112202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673704067340.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021112202011 its reverse (11020221112002), we get a palindrome (31041333314013).

The spelling of 20021112202011 in words is "twenty trillion, twenty-one billion, one hundred twelve million, two hundred two thousand, eleven".