20021022101111 has 2 divisors, whose sum is σ = 20021022101112. Its totient is φ = 20021022101110.

The previous prime is 20021022101083. The next prime is 20021022101141. The reversal of 20021022101111 is 11110122012002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20021022101111 - 2¹⁰ = 20021022100087 is a prime.

It is a super-2 number, since 2×20021022101111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021022101141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010511050555 + 10010511050556.

It is an arithmetic number, because the mean of its divisors is an integer number (10010511050556).

Almost surely, 2^{20021022101111} is an apocalyptic number.

20021022101111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021022101111 is an equidigital number, since it uses as much as digits as its factorization.

20021022101111 is an evil number, because the sum of its binary digits is even.

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

Adding to 20021022101111 its reverse (11110122012002), we get a palindrome (31131144113113).

The spelling of 20021022101111 in words is "twenty trillion, twenty-one billion, twenty-two million, one hundred one thousand, one hundred eleven".