10020020111111 has 4 divisors (see below), whose sum is σ = 10146855808800. Its totient is φ = 9893184413424.

The previous prime is 10020020111093. The next prime is 10020020111113. The reversal of 10020020111111 is 11111102002001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020020111111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020020111092 and 10020020111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020020111113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63417848726 + ... + 63417848883.

It is an arithmetic number, because the mean of its divisors is an integer number (2536713952200).

Almost surely, 2^{10020020111111} is an apocalyptic number.

10020020111111 is a deficient number, since it is larger than the sum of its proper divisors (126835697689).

10020020111111 is an equidigital number, since it uses as much as digits as its factorization.

10020020111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126835697688.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10020020111111 its reverse (11111102002001), we get a palindrome (21131122113112).

The spelling of 10020020111111 in words is "ten trillion, twenty billion, twenty million, one hundred eleven thousand, one hundred eleven".