1121031203011 has 4 divisors (see below), whose sum is σ = 1121296917400. Its totient is φ = 1120765488624.

The previous prime is 1121031203003. The next prime is 1121031203021. The reversal of 1121031203011 is 1103021301211.

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 1121031203011 - 2³ = 1121031203003 is a prime.

It is a super-2 number, since 2×1121031203011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121031203021) 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, 132850866 + ... + 132859303.

It is an arithmetic number, because the mean of its divisors is an integer number (280324229350).

Almost surely, 2^{1121031203011} is an apocalyptic number.

1121031203011 is a deficient number, since it is larger than the sum of its proper divisors (265714389).

1121031203011 is an equidigital number, since it uses as much as digits as its factorization.

1121031203011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265714388.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1121031203011 its reverse (1103021301211), we get a palindrome (2224052504222).

The spelling of 1121031203011 in words is "one trillion, one hundred twenty-one billion, thirty-one million, two hundred three thousand, eleven".