1102111643 has 4 divisors (see below), whose sum is σ = 1105115040. Its totient is φ = 1099108248.

The previous prime is 1102111613. The next prime is 1102111667. The reversal of 1102111643 is 3461112011.

It is a happy number.

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 1102111643 - 2⁶ = 1102111579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102111613) 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, 1501148 + ... + 1501881.

It is an arithmetic number, because the mean of its divisors is an integer number (276278760).

Almost surely, 2^1102111643 is an apocalyptic number.

1102111643 is a deficient number, since it is larger than the sum of its proper divisors (3003397).

1102111643 is an equidigital number, since it uses as much as digits as its factorization.

1102111643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003396.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1102111643 is about 33198.0668563698. The cubic root of 1102111643 is about 1032.9402408275.

Adding to 1102111643 its reverse (3461112011), we get a palindrome (4563223654).

The spelling of 1102111643 in words is "one billion, one hundred two million, one hundred eleven thousand, six hundred forty-three".