11211021021023 has 4 divisors (see below), whose sum is σ = 11211029672520. Its totient is φ = 11211012369528.

The previous prime is 11211021021001. The next prime is 11211021021061. The reversal of 11211021021023 is 32012012011211.

It is a happy number.

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 is a cyclic number.

It is not a de Polignac number, because 11211021021023 - 2²⁶ = 11210953912159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211021020992 and 11211021021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211021023023) 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, 1945340 + ... + 5119217.

It is an arithmetic number, because the mean of its divisors is an integer number (2802757418130).

Almost surely, 2^{11211021021023} is an apocalyptic number.

11211021021023 is a deficient number, since it is larger than the sum of its proper divisors (8651497).

11211021021023 is an equidigital number, since it uses as much as digits as its factorization.

11211021021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651496.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11211021021023 its reverse (32012012011211), we get a palindrome (43223033032234).

The spelling of 11211021021023 in words is "eleven trillion, two hundred eleven billion, twenty-one million, twenty-one thousand, twenty-three".