1111212043 has 4 divisors (see below), whose sum is σ = 1117635408. Its totient is φ = 1104788680.

The previous prime is 1111212031. The next prime is 1111212061. The reversal of 1111212043 is 3402121111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111212043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111212073) 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, 3211423 + ... + 3211768.

It is an arithmetic number, because the mean of its divisors is an integer number (279408852).

Almost surely, 2^1111212043 is an apocalyptic number.

1111212043 is a deficient number, since it is larger than the sum of its proper divisors (6423365).

1111212043 is an equidigital number, since it uses as much as digits as its factorization.

1111212043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423364.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1111212043 is about 33334.8472772863. The cubic root of 1111212043 is about 1035.7755295863.

Adding to 1111212043 its reverse (3402121111), we get a palindrome (4513333154).

The spelling of 1111212043 in words is "one billion, one hundred eleven million, two hundred twelve thousand, forty-three".