20020021222111 has 16 divisors (see below), whose sum is σ = 21291834925440. Its totient is φ = 18758682708480.

The previous prime is 20020021222073. The next prime is 20020021222129. The reversal of 20020021222111 is 11122212002002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20020021222111 - 2¹¹ = 20020021220063 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 (20020021222711) 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, 53564421 + ... + 53936881.

It is an arithmetic number, because the mean of its divisors is an integer number (1330739682840).

Almost surely, 2^{20020021222111} is an apocalyptic number.

20020021222111 is a deficient number, since it is larger than the sum of its proper divisors (1271813703329).

20020021222111 is a wasteful number, since it uses less digits than its factorization.

20020021222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386514.

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

Adding to 20020021222111 its reverse (11122212002002), we get a palindrome (31142233224113).

The spelling of 20020021222111 in words is "twenty trillion, twenty billion, twenty-one million, two hundred twenty-two thousand, one hundred eleven".