1020020110111 has 16 divisors (see below), whose sum is σ = 1067958325728. Its totient is φ = 973417408000.

The previous prime is 1020020110091. The next prime is 1020020110121. The reversal of 1020020110111 is 1110110200201.

It is not a de Polignac number, because 1020020110111 - 2⁹ = 1020020109599 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 (1020020110121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140166 + ... + 1827571.

It is an arithmetic number, because the mean of its divisors is an integer number (66747395358).

Almost surely, 2^{1020020110111} is an apocalyptic number.

1020020110111 is a deficient number, since it is larger than the sum of its proper divisors (47938215617).

1020020110111 is a wasteful number, since it uses less digits than its factorization.

1020020110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967962.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1020020110111 its reverse (1110110200201), we get a palindrome (2130130310312).

The spelling of 1020020110111 in words is "one trillion, twenty billion, twenty million, one hundred ten thousand, one hundred eleven".