20020211202021 has 16 divisors (see below), whose sum is σ = 26718504234048. Its totient is φ = 13334365497600.

The previous prime is 20020211202001. The next prime is 20020211202049. The reversal of 20020211202021 is 12020211202002.

It is not a de Polignac number, because 20020211202021 - 2¹¹ = 20020211199973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020211202001) 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, 29992461 + ... + 30652701.

It is an arithmetic number, because the mean of its divisors is an integer number (1669906514628).

Almost surely, 2^{20020211202021} is an apocalyptic number.

It is an amenable number.

20020211202021 is a deficient number, since it is larger than the sum of its proper divisors (6698293032027).

20020211202021 is a wasteful number, since it uses less digits than its factorization.

20020211202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669652.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20020211202021 its reverse (12020211202002), we get a palindrome (32040422404023).

The spelling of 20020211202021 in words is "twenty trillion, twenty billion, two hundred eleven million, two hundred two thousand, twenty-one".