1112121123 has 4 divisors (see below), whose sum is σ = 1482828168. Its totient is φ = 741414080.

The previous prime is 1112121107. The next prime is 1112121161. The reversal of 1112121123 is 3211212111.

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 1112121123 - 2⁴ = 1112121107 is a prime.

It is a super-2 number, since 2×1112121123² = 2473626784445562258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1112121103) 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, 185353518 + ... + 185353523.

It is an arithmetic number, because the mean of its divisors is an integer number (370707042).

Almost surely, 2^1112121123 is an apocalyptic number.

1112121123 is a deficient number, since it is larger than the sum of its proper divisors (370707045).

1112121123 is an equidigital number, since it uses as much as digits as its factorization.

1112121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370707044.

The product of its digits is 24, while the sum is 15.

The square root of 1112121123 is about 33348.4800703121. The cubic root of 1112121123 is about 1036.0579077837.

Adding to 1112121123 its reverse (3211212111), we get a palindrome (4323333234).

The spelling of 1112121123 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twenty-three".