201120020021111 has 2 divisors, whose sum is σ = 201120020021112. Its totient is φ = 201120020021110.

The previous prime is 201120020021083. The next prime is 201120020021171. The reversal of 201120020021111 is 111120020021102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201120020021111 - 2¹⁸ = 201120019758967 is a prime.

It is a super-3 number, since 3×201120020021111³ (a number of 44 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201120020021171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560010010555 + 100560010010556.

It is an arithmetic number, because the mean of its divisors is an integer number (100560010010556).

Almost surely, 2^{201120020021111} is an apocalyptic number.

201120020021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120020021111 is an equidigital number, since it uses as much as digits as its factorization.

201120020021111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201120020021111 its reverse (111120020021102), we get a palindrome (312240040042213).

Subtracting from 201120020021111 its reverse (111120020021102), we obtain a palindrome (90000000000009).

The spelling of 201120020021111 in words is "two hundred one trillion, one hundred twenty billion, twenty million, twenty-one thousand, one hundred eleven".