11011010021021 has 8 divisors (see below), whose sum is σ = 11521974792024. Its totient is φ = 10511275245120.

The previous prime is 11011010021017. The next prime is 11011010021029. The reversal of 11011010021021 is 12012001011011.

11011010021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6974426755396 + 4036583265625 = 2640914^2 + 2009125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11011010021021 - 2² = 11011010021017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011010020993 and 11011010021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011010021029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807496770 + ... + 2807500691.

It is an arithmetic number, because the mean of its divisors is an integer number (1440246849003).

Almost surely, 2^{11011010021021} is an apocalyptic number.

It is an amenable number.

11011010021021 is a deficient number, since it is larger than the sum of its proper divisors (510964771003).

11011010021021 is an equidigital number, since it uses as much as digits as its factorization.

11011010021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614997551.

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

Adding to 11011010021021 its reverse (12012001011011), we get a palindrome (23023011032032).

The spelling of 11011010021021 in words is "eleven trillion, eleven billion, ten million, twenty-one thousand, twenty-one".