1201121112011 has 8 divisors (see below), whose sum is σ = 1216448817600. Its totient is φ = 1185796497600.

The previous prime is 1201121112007. The next prime is 1201121112029. The reversal of 1201121112011 is 1102111211021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201121112011 - 2² = 1201121112007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201121112511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14375 + ... + 1549983.

It is an arithmetic number, because the mean of its divisors is an integer number (152056102200).

Almost surely, 2^{1201121112011} is an apocalyptic number.

1201121112011 is a deficient number, since it is larger than the sum of its proper divisors (15327705589).

1201121112011 is an equidigital number, since it uses as much as digits as its factorization.

1201121112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545589.

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

Adding to 1201121112011 its reverse (1102111211021), we get a palindrome (2303232323032).

The spelling of 1201121112011 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred twelve thousand, eleven".