11021021011021 has 4 divisors (see below), whose sum is σ = 12595452584032. Its totient is φ = 9446589438012.

The previous prime is 11021021011019. The next prime is 11021021011057. The reversal of 11021021011021 is 12011012012011.

It is a happy number.

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 11021021011021 - 2¹ = 11021021011019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021021010992 and 11021021011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021021011001) 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, 787215786495 + ... + 787215786508.

It is an arithmetic number, because the mean of its divisors is an integer number (3148863146008).

Almost surely, 2^{11021021011021} is an apocalyptic number.

It is an amenable number.

11021021011021 is a deficient number, since it is larger than the sum of its proper divisors (1574431573011).

11021021011021 is an equidigital number, since it uses as much as digits as its factorization.

11021021011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574431573010.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11021021011021 its reverse (12011012012011), we get a palindrome (23032033023032).

The spelling of 11021021011021 in words is "eleven trillion, twenty-one billion, twenty-one million, eleven thousand, twenty-one".