11010020111021 has 4 divisors (see below), whose sum is σ = 11244275858112. Its totient is φ = 10775764363932.

The previous prime is 11010020111011. The next prime is 11010020111023. The reversal of 11010020111021 is 12011102001011.

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 11010020111021 - 2³⁴ = 10992840241837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11010020110993 and 11010020111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010020111023) 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, 117127873475 + ... + 117127873568.

It is an arithmetic number, because the mean of its divisors is an integer number (2811068964528).

Almost surely, 2^{11010020111021} is an apocalyptic number.

It is an amenable number.

11010020111021 is a deficient number, since it is larger than the sum of its proper divisors (234255747091).

11010020111021 is an equidigital number, since it uses as much as digits as its factorization.

11010020111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234255747090.

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

Adding to 11010020111021 its reverse (12011102001011), we get a palindrome (23021122112032).

The spelling of 11010020111021 in words is "eleven trillion, ten billion, twenty million, one hundred eleven thousand, twenty-one".