11021011312123 has 4 divisors (see below), whose sum is σ = 11021415913768. Its totient is φ = 11020606710480.

The previous prime is 11021011312121. The next prime is 11021011312127. The reversal of 11021011312123 is 32121311012011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11021011312123 - 2¹ = 11021011312121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11021011312123.

It is not an unprimeable number, because it can be changed into a prime (11021011312121) 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, 202259961 + ... + 202314442.

It is an arithmetic number, because the mean of its divisors is an integer number (2755353978442).

Almost surely, 2^{11021011312123} is an apocalyptic number.

11021011312123 is a deficient number, since it is larger than the sum of its proper divisors (404601645).

11021011312123 is an equidigital number, since it uses as much as digits as its factorization.

11021011312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404601644.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11021011312123 its reverse (32121311012011), we get a palindrome (43142322324134).

The spelling of 11021011312123 in words is "eleven trillion, twenty-one billion, eleven million, three hundred twelve thousand, one hundred twenty-three".