11121012001 has 4 divisors (see below), whose sum is σ = 12132013104. Its totient is φ = 10110010900.

The previous prime is 11121011983. The next prime is 11121012079. The reversal of 11121012001 is 10021012111.

11121012001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10021012111 = 11 ⋅911001101.

It is not a de Polignac number, because 11121012001 - 2²⁵ = 11087457569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121012701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505500535 + ... + 505500556.

It is an arithmetic number, because the mean of its divisors is an integer number (3033003276).

Almost surely, 2^11121012001 is an apocalyptic number.

11121012001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11121012001 is a deficient number, since it is larger than the sum of its proper divisors (1011001103).

11121012001 is a wasteful number, since it uses less digits than its factorization.

11121012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011001102.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11121012001 its reverse (10021012111), we get a palindrome (21142024112).

The spelling of 11121012001 in words is "eleven billion, one hundred twenty-one million, twelve thousand, one".