20020021212011 has 4 divisors (see below), whose sum is σ = 20020045983000. Its totient is φ = 20019996441024.

The previous prime is 20020021211977. The next prime is 20020021212067. The reversal of 20020021212011 is 11021212002002.

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 20020021212011 - 2¹⁴ = 20020021195627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020021202011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11130821 + ... + 12803718.

It is an arithmetic number, because the mean of its divisors is an integer number (5005011495750).

Almost surely, 2^{20020021212011} is an apocalyptic number.

20020021212011 is a deficient number, since it is larger than the sum of its proper divisors (24770989).

20020021212011 is an equidigital number, since it uses as much as digits as its factorization.

20020021212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24770988.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20020021212011 its reverse (11021212002002), we get a palindrome (31041233214013).

The spelling of 20020021212011 in words is "twenty trillion, twenty billion, twenty-one million, two hundred twelve thousand, eleven".