11012101010021 has 4 divisors (see below), whose sum is σ = 11012108123532. Its totient is φ = 11012093896512.

The previous prime is 11012101009993. The next prime is 11012101010069. The reversal of 11012101010021 is 12001010121011.

11012101010021 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7000548681025 + 4011552328996 = 2645855^2 + 2002886^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012101010021 - 2³⁸ = 10737223103077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012101009984 and 11012101010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012101010081) 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, 141626 + ... + 4695131.

It is an arithmetic number, because the mean of its divisors is an integer number (2753027030883).

Almost surely, 2^{11012101010021} is an apocalyptic number.

It is an amenable number.

11012101010021 is a deficient number, since it is larger than the sum of its proper divisors (7113511).

11012101010021 is an equidigital number, since it uses as much as digits as its factorization.

11012101010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113510.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11012101010021 its reverse (12001010121011), we get a palindrome (23013111131032).

The spelling of 11012101010021 in words is "eleven trillion, twelve billion, one hundred one million, ten thousand, twenty-one".