1001121120011 has 4 divisors (see below), whose sum is σ = 1001176888992. Its totient is φ = 1001065351032.

The previous prime is 1001121120007. The next prime is 1001121120133. The reversal of 1001121120011 is 1100211211001.

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 1001121120011 - 2² = 1001121120007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001121119974 and 1001121120001.

It is not an unprimeable number, because it can be changed into a prime (1001121170011) 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, 27857555 + ... + 27893468.

It is an arithmetic number, because the mean of its divisors is an integer number (250294222248).

Almost surely, 2^{1001121120011} is an apocalyptic number.

1001121120011 is a deficient number, since it is larger than the sum of its proper divisors (55768981).

1001121120011 is an equidigital number, since it uses as much as digits as its factorization.

1001121120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55768980.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001121120011 its reverse (1100211211001), we get a palindrome (2101332331012).

The spelling of 1001121120011 in words is "one trillion, one billion, one hundred twenty-one million, one hundred twenty thousand, eleven".