11021211010123 has 4 divisors (see below), whose sum is σ = 11021221059928. Its totient is φ = 11021200960320.

The previous prime is 11021211010093. The next prime is 11021211010129. The reversal of 11021211010123 is 32101011212011.

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 11021211010123 - 2⁴¹ = 8822187754571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021211010097 and 11021211010106.

It is not an unprimeable number, because it can be changed into a prime (11021211010129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3145638 + ... + 5651323.

It is an arithmetic number, because the mean of its divisors is an integer number (2755305264982).

Almost surely, 2^{11021211010123} is an apocalyptic number.

11021211010123 is a deficient number, since it is larger than the sum of its proper divisors (10049805).

11021211010123 is an equidigital number, since it uses as much as digits as its factorization.

11021211010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10049804.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11021211010123 its reverse (32101011212011), we get a palindrome (43122222222134).

The spelling of 11021211010123 in words is "eleven trillion, twenty-one billion, two hundred eleven million, ten thousand, one hundred twenty-three".