1102012123 has 4 divisors (see below), whose sum is σ = 1104372360. Its totient is φ = 1099651888.

The previous prime is 1102012069. The next prime is 1102012129. The reversal of 1102012123 is 3212102011.

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 1102012123 - 2²¹ = 1099914971 is a prime.

It is a super-3 number, since 3×1102012123³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179418 + ... + 1180351.

It is an arithmetic number, because the mean of its divisors is an integer number (276093090).

Almost surely, 2^1102012123 is an apocalyptic number.

1102012123 is a deficient number, since it is larger than the sum of its proper divisors (2360237).

1102012123 is an equidigital number, since it uses as much as digits as its factorization.

1102012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360236.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1102012123 is about 33196.5679400748. The cubic root of 1102012123 is about 1032.9091486032.

Adding to 1102012123 its reverse (3212102011), we get a palindrome (4314114134).

The spelling of 1102012123 in words is "one billion, one hundred two million, twelve thousand, one hundred twenty-three".