10111001001001 has 4 divisors (see below), whose sum is σ = 10113129189504. Its totient is φ = 10108872812500.

The previous prime is 10111001000981. The next prime is 10111001001061. The reversal of 10111001001001 is 10010010011101.

It is a happy number.

10111001001001 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.

It is a cyclic number.

It is not a de Polignac number, because 10111001001001 - 2⁹ = 10111001000489 is a prime.

It is a Duffinian number.

10111001001001 is a modest number, since divided by 1001001 gives 10111 as remainder.

It is not an unprimeable number, because it can be changed into a prime (10111001001061) 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, 1064087125 + ... + 1064096626.

It is an arithmetic number, because the mean of its divisors is an integer number (2528282297376).

Almost surely, 2^{10111001001001} is an apocalyptic number.

It is an amenable number.

10111001001001 is a deficient number, since it is larger than the sum of its proper divisors (2128188503).

10111001001001 is an equidigital number, since it uses as much as digits as its factorization.

10111001001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128188502.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 10111001001001 its reverse (10010010011101), we get a palindrome (20121011012102).

The spelling of 10111001001001 in words is "ten trillion, one hundred eleven billion, one million, one thousand, one".