10121111001011 has 4 divisors (see below), whose sum is σ = 10124849869992. Its totient is φ = 10117372132032.

The previous prime is 10121111000989. The next prime is 10121111001013. The reversal of 10121111001011 is 11010011112101.

It is a happy number.

10121111001011 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121111001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121111000983 and 10121111001001.

It is not an unprimeable number, because it can be changed into a prime (10121111001013) 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, 1869430430 + ... + 1869435843.

It is an arithmetic number, because the mean of its divisors is an integer number (2531212467498).

Almost surely, 2^{10121111001011} is an apocalyptic number.

10121111001011 is a deficient number, since it is larger than the sum of its proper divisors (3738868981).

10121111001011 is an equidigital number, since it uses as much as digits as its factorization.

10121111001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738868980.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 10121111001011 its reverse (11010011112101), we get a palindrome (21131122113112).

The spelling of 10121111001011 in words is "ten trillion, one hundred twenty-one billion, one hundred eleven million, one thousand, eleven".