1121210331011 has 4 divisors (see below), whose sum is σ = 1187163879912. Its totient is φ = 1055256782112.

The previous prime is 1121210330993. The next prime is 1121210331019. The reversal of 1121210331011 is 1101330121211.

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-1121210331011 is a prime.

It is a super-2 number, since 2×1121210331011² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 65953548883 = 1121210331011 / (1 + 1 + 2 + 1 + 2 + 1 + 0 + 3 + 3 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121210331019) 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, 32976774425 + ... + 32976774458.

It is an arithmetic number, because the mean of its divisors is an integer number (296790969978).

Almost surely, 2^{1121210331011} is an apocalyptic number.

1121210331011 is a deficient number, since it is larger than the sum of its proper divisors (65953548901).

1121210331011 is an equidigital number, since it uses as much as digits as its factorization.

1121210331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65953548900.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1121210331011 its reverse (1101330121211), we get a palindrome (2222540452222).

The spelling of 1121210331011 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, three hundred thirty-one thousand, eleven".