1121201211011 has 8 divisors (see below), whose sum is σ = 1300497780480. Its totient is φ = 946685883528.

The previous prime is 1121201211001. The next prime is 1121201211019. The reversal of 1121201211011 is 1101121021211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1121201211011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121201211019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195309991 + ... + 1195310928.

It is an arithmetic number, because the mean of its divisors is an integer number (162562222560).

Almost surely, 2^{1121201211011} is an apocalyptic number.

1121201211011 is a deficient number, since it is larger than the sum of its proper divisors (179296569469).

1121201211011 is an equidigital number, since it uses as much as digits as its factorization.

1121201211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390620993.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121201211011 its reverse (1101121021211), we get a palindrome (2222322232222).

The spelling of 1121201211011 in words is "one trillion, one hundred twenty-one billion, two hundred one million, two hundred eleven thousand, eleven".