1020120110011 has 4 divisors (see below), whose sum is σ = 1020136216000. Its totient is φ = 1020104004024.

The previous prime is 1020120109979. The next prime is 1020120110069. The reversal of 1020120110011 is 1100110210201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020120110011 - 2⁵ = 1020120109979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020120110011.

It is not an unprimeable number, because it can be changed into a prime (1020120110311) 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, 7957611 + ... + 8084788.

It is an arithmetic number, because the mean of its divisors is an integer number (255034054000).

Almost surely, 2^{1020120110011} is an apocalyptic number.

1020120110011 is a deficient number, since it is larger than the sum of its proper divisors (16105989).

1020120110011 is an equidigital number, since it uses as much as digits as its factorization.

1020120110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16105988.

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

Adding to 1020120110011 its reverse (1100110210201), we get a palindrome (2120230320212).

The spelling of 1020120110011 in words is "one trillion, twenty billion, one hundred twenty million, one hundred ten thousand, eleven".