1001121000011 has 4 divisors (see below), whose sum is σ = 1092132000024. Its totient is φ = 910110000000.

The previous prime is 1001120999987. The next prime is 1001121000029. The reversal of 1001121000011 is 1100001211001.

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 1001121000011 - 2¹⁴ = 1001120983627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001121000041) 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, 45505499990 + ... + 45505500011.

It is an arithmetic number, because the mean of its divisors is an integer number (273033000006).

Almost surely, 2^{1001121000011} is an apocalyptic number.

1001121000011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001121000011 is a deficient number, since it is larger than the sum of its proper divisors (91011000013).

1001121000011 is an equidigital number, since it uses as much as digits as its factorization.

1001121000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91011000012.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1001121000011 its reverse (1100001211001), we get a palindrome (2101122211012).

The spelling of 1001121000011 in words is "one trillion, one billion, one hundred twenty-one million, eleven", and thus it is an aban number.