1020202011111 has 16 divisors (see below), whose sum is σ = 1376838529920. Its totient is φ = 671880487200.

The previous prime is 1020202011107. The next prime is 1020202011139. The reversal of 1020202011111 is 1111102020201.

It is not a de Polignac number, because 1020202011111 - 2² = 1020202011107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202011161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3666001 + ... + 3934458.

It is an arithmetic number, because the mean of its divisors is an integer number (86052408120).

Almost surely, 2^{1020202011111} is an apocalyptic number.

1020202011111 is a deficient number, since it is larger than the sum of its proper divisors (356636518809).

1020202011111 is a wasteful number, since it uses less digits than its factorization.

1020202011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601006.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020202011111 its reverse (1111102020201), we get a palindrome (2131304031312).

It can be divided in two parts, 102020201 and 1111, that multiplied together give a palindrome (113344443311).

The spelling of 1020202011111 in words is "one trillion, twenty billion, two hundred two million, eleven thousand, one hundred eleven".