11311203223021 has 32 divisors (see below), whose sum is σ = 12780960192000. Its totient is φ = 9937424098560.

The previous prime is 11311203223003. The next prime is 11311203223031. The reversal of 11311203223021 is 12032230211311.

It is a cyclic number.

It is not a de Polignac number, because 11311203223021 - 2⁹ = 11311203222509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11311203222983 and 11311203223001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311203223031) 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 31 ways as a sum of consecutive naturals, for example, 176603415 + ... + 176667451.

It is an arithmetic number, because the mean of its divisors is an integer number (399405006000).

Almost surely, 2^{11311203223021} is an apocalyptic number.

It is an amenable number.

11311203223021 is a deficient number, since it is larger than the sum of its proper divisors (1469756968979).

11311203223021 is a wasteful number, since it uses less digits than its factorization.

11311203223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70749.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11311203223021 its reverse (12032230211311), we get a palindrome (23343433434332).

The spelling of 11311203223021 in words is "eleven trillion, three hundred eleven billion, two hundred three million, two hundred twenty-three thousand, twenty-one".