10311242221 has 16 divisors (see below), whose sum is σ = 12435500160. Its totient is φ = 8352115200.

The previous prime is 10311242219. The next prime is 10311242243. The reversal of 10311242221 is 12224211301.

10311242221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10311242221 - 2¹ = 10311242219 is a prime.

It is a super-2 number, since 2×10311242221² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10311242281) 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 15 ways as a sum of consecutive naturals, for example, 43336 + ... + 150001.

It is an arithmetic number, because the mean of its divisors is an integer number (777218760).

Almost surely, 2^10311242221 is an apocalyptic number.

It is an amenable number.

10311242221 is a deficient number, since it is larger than the sum of its proper divisors (2124257939).

10311242221 is a wasteful number, since it uses less digits than its factorization.

10311242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193764.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10311242221 its reverse (12224211301), we get a palindrome (22535453522).

The spelling of 10311242221 in words is "ten billion, three hundred eleven million, two hundred forty-two thousand, two hundred twenty-one".