10122220111 has 4 divisors (see below), whose sum is σ = 10145278000. Its totient is φ = 10099162224.

The previous prime is 10122220109. The next prime is 10122220123. The reversal of 10122220111 is 11102222101.

10122220111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10122220111 - 2¹ = 10122220109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122220091 and 10122220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122220711) 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, 11528286 + ... + 11529163.

It is an arithmetic number, because the mean of its divisors is an integer number (2536319500).

Almost surely, 2^10122220111 is an apocalyptic number.

10122220111 is a deficient number, since it is larger than the sum of its proper divisors (23057889).

10122220111 is an equidigital number, since it uses as much as digits as its factorization.

10122220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23057888.

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

Adding to 10122220111 its reverse (11102222101), we get a palindrome (21224442212).

The spelling of 10122220111 in words is "ten billion, one hundred twenty-two million, two hundred twenty thousand, one hundred eleven".