10112221111 has 4 divisors (see below), whose sum is σ = 10438421824. Its totient is φ = 9786020400.

The previous prime is 10112221039. The next prime is 10112221151. The reversal of 10112221111 is 11112221101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11112221101 = 105097 ⋅105733.

It is a cyclic number.

It is not a de Polignac number, because 10112221111 - 2²³ = 10103832503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10112221091 and 10112221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112221151) 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, 163100310 + ... + 163100371.

It is an arithmetic number, because the mean of its divisors is an integer number (2609605456).

Almost surely, 2^10112221111 is an apocalyptic number.

10112221111 is a deficient number, since it is larger than the sum of its proper divisors (326200713).

10112221111 is an equidigital number, since it uses as much as digits as its factorization.

10112221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326200712.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10112221111 its reverse (11112221101), we get a palindrome (21224442212).

The spelling of 10112221111 in words is "ten billion, one hundred twelve million, two hundred twenty-one thousand, one hundred eleven".