1122100111 has 8 divisors (see below), whose sum is σ = 1226160000. Its totient is φ = 1018382040.

The previous prime is 1122100069. The next prime is 1122100139. The reversal of 1122100111 is 1110012211.

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 1122100111 - 2¹⁵ = 1122067343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122100711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78561 + ... + 91738.

It is an arithmetic number, because the mean of its divisors is an integer number (153270000).

Almost surely, 2^1122100111 is an apocalyptic number.

1122100111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1122100111 is a deficient number, since it is larger than the sum of its proper divisors (104059889).

1122100111 is a wasteful number, since it uses less digits than its factorization.

1122100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170909.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1122100111 is about 33497.7627760422. The cubic root of 1122100111 is about 1039.1475111561.

Adding to 1122100111 its reverse (1110012211), we get a palindrome (2232112322).

It can be divided in two parts, 1122100 and 111, that added together give a palindrome (1122211).

The spelling of 1122100111 in words is "one billion, one hundred twenty-two million, one hundred thousand, one hundred eleven".