10001121011 has 4 divisors (see below), whose sum is σ = 11429852592. Its totient is φ = 8572389432.

The previous prime is 10001121007. The next prime is 10001121019. The reversal of 10001121011 is 11012110001.

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 10001121011 - 2² = 10001121007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10001121011.

It is not an unprimeable number, because it can be changed into a prime (10001121019) 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, 714365780 + ... + 714365793.

It is an arithmetic number, because the mean of its divisors is an integer number (2857463148).

Almost surely, 2^10001121011 is an apocalyptic number.

10001121011 is a deficient number, since it is larger than the sum of its proper divisors (1428731581).

10001121011 is an equidigital number, since it uses as much as digits as its factorization.

10001121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428731580.

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

Adding to 10001121011 its reverse (11012110001), we get a palindrome (21013231012).

The spelling of 10001121011 in words is "ten billion, one million, one hundred twenty-one thousand, eleven".