1122101111 has 4 divisors (see below), whose sum is σ = 1137905424. Its totient is φ = 1106296800.

The previous prime is 1122101093. The next prime is 1122101119. The reversal of 1122101111 is 1111012211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1111012211 = 19979 ⋅55609.

It is a cyclic number.

It is not a de Polignac number, because 1122101111 - 2¹⁴ = 1122084727 is a prime.

It is a super-2 number, since 2×1122101111² = 2518221806614868642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122101092 and 1122101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122101119) 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, 7902050 + ... + 7902191.

It is an arithmetic number, because the mean of its divisors is an integer number (284476356).

Almost surely, 2^1122101111 is an apocalyptic number.

1122101111 is a deficient number, since it is larger than the sum of its proper divisors (15804313).

1122101111 is an equidigital number, since it uses as much as digits as its factorization.

1122101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15804312.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1122101111 is about 33497.7777024089. Note that the first 4 decimals coincide. The cubic root of 1122101111 is about 1039.1478198473.

Adding to 1122101111 its reverse (1111012211), we get a palindrome (2233113322).

Subtracting from 1122101111 its reverse (1111012211), we obtain a square (11088900 = 3330²).

The spelling of 1122101111 in words is "one billion, one hundred twenty-two million, one hundred one thousand, one hundred eleven".