1111202120011 has 4 divisors (see below), whose sum is σ = 1111359901032. Its totient is φ = 1111044338992.

The previous prime is 1111202119879. The next prime is 1111202120029. The reversal of 1111202120011 is 1100212021111.

It is a happy number.

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 1111202120011 - 2¹⁵ = 1111202087243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111202119973 and 1111202120000.

It is not an unprimeable number, because it can be changed into a prime (1111202120051) 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, 78879946 + ... + 78894031.

It is an arithmetic number, because the mean of its divisors is an integer number (277839975258).

Almost surely, 2^{1111202120011} is an apocalyptic number.

1111202120011 is a deficient number, since it is larger than the sum of its proper divisors (157781021).

1111202120011 is an equidigital number, since it uses as much as digits as its factorization.

1111202120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157781020.

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

Adding to 1111202120011 its reverse (1100212021111), we get a palindrome (2211414141122).

The spelling of 1111202120011 in words is "one trillion, one hundred eleven billion, two hundred two million, one hundred twenty thousand, eleven".