11021213123123 has 8 divisors (see below), whose sum is σ = 12629992776192. Its totient is φ = 9421013628936.

The previous prime is 11021213123069. The next prime is 11021213123149. The reversal of 11021213123123 is 32132131212011.

It is a happy number.

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

It is not a de Polignac number, because 11021213123123 - 2¹² = 11021213119027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021213153123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2145036965 + ... + 2145042102.

It is an arithmetic number, because the mean of its divisors is an integer number (1578749097024).

Almost surely, 2^{11021213123123} is an apocalyptic number.

11021213123123 is a deficient number, since it is larger than the sum of its proper divisors (1608779653069).

11021213123123 is an equidigital number, since it uses as much as digits as its factorization.

11021213123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290079441.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11021213123123 its reverse (32132131212011), we get a palindrome (43153344335134).

The spelling of 11021213123123 in words is "eleven trillion, twenty-one billion, two hundred thirteen million, one hundred twenty-three thousand, one hundred twenty-three".