10221220111 has 8 divisors (see below), whose sum is σ = 10301894064. Its totient is φ = 10140586560.

The previous prime is 10221220109. The next prime is 10221220117. The reversal of 10221220111 is 11102212201.

10221220111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10221220111 - 2¹ = 10221220109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221220091 and 10221220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221220117) 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 7 ways as a sum of consecutive naturals, for example, 683365 + ... + 698161.

It is an arithmetic number, because the mean of its divisors is an integer number (1287736758).

Almost surely, 2^10221220111 is an apocalyptic number.

10221220111 is a deficient number, since it is larger than the sum of its proper divisors (80673953).

10221220111 is a wasteful number, since it uses less digits than its factorization.

10221220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10221220111 its reverse (11102212201), we get a palindrome (21323432312).

It can be divided in two parts, 102212201 and 11, that multiplied together give a palindrome (1124334211).

The spelling of 10221220111 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, one hundred eleven".