11311120012021 has 8 divisors (see below), whose sum is σ = 11319679453824. Its totient is φ = 11302560937920.

The previous prime is 11311120011979. The next prime is 11311120012037. The reversal of 11311120012021 is 12021002111311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11311120012021 - 2³⁹ = 10761364198133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311120011986 and 11311120012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311120012061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118907940 + ... + 119003026.

It is an arithmetic number, because the mean of its divisors is an integer number (1414959931728).

Almost surely, 2^{11311120012021} is an apocalyptic number.

It is an amenable number.

11311120012021 is a deficient number, since it is larger than the sum of its proper divisors (8559441803).

11311120012021 is an equidigital number, since it uses as much as digits as its factorization.

11311120012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183851.

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

Adding to 11311120012021 its reverse (12021002111311), we get a palindrome (23332122123332).

The spelling of 11311120012021 in words is "eleven trillion, three hundred eleven billion, one hundred twenty million, twelve thousand, twenty-one".