20110102112011 has 2 divisors, whose sum is σ = 20110102112012. Its totient is φ = 20110102112010.

The previous prime is 20110102111903. The next prime is 20110102112017. The reversal of 20110102112011 is 11021120101102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20110102112011 - 2²¹ = 20110100014859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110102111982 and 20110102112000.

It is not a weakly prime, because it can be changed into another prime (20110102112017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055051056005 + 10055051056006.

It is an arithmetic number, because the mean of its divisors is an integer number (10055051056006).

Almost surely, 2^{20110102112011} is an apocalyptic number.

20110102112011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110102112011 is an equidigital number, since it uses as much as digits as its factorization.

20110102112011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20110102112011 its reverse (11021120101102), we get a palindrome (31131222213113).

The spelling of 20110102112011 in words is "twenty trillion, one hundred ten billion, one hundred two million, one hundred twelve thousand, eleven".