20020021020111 has 32 divisors (see below), whose sum is σ = 31499395891200. Its totient is φ = 11067952364640.

The previous prime is 20020021020091. The next prime is 20020021020119. The reversal of 20020021020111 is 11102012002002.

It is not a de Polignac number, because 20020021020111 - 2¹⁹ = 20020020495823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020021020119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1820331 + ... + 6584348.

It is an arithmetic number, because the mean of its divisors is an integer number (984356121600).

Almost surely, 2^{20020021020111} is an apocalyptic number.

20020021020111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20020021020111 is a deficient number, since it is larger than the sum of its proper divisors (11479374871089).

20020021020111 is a wasteful number, since it uses less digits than its factorization.

20020021020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8408379.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20020021020111 its reverse (11102012002002), we get a palindrome (31122033022113).

The spelling of 20020021020111 in words is "twenty trillion, twenty billion, twenty-one million, twenty thousand, one hundred eleven".