1201212443 has 4 divisors (see below), whose sum is σ = 1201283328. Its totient is φ = 1201141560.

The previous prime is 1201212431. The next prime is 1201212479. The reversal of 1201212443 is 3442121021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1201212443 - 2⁶ = 1201212379 is a prime.

It is a super-2 number, since 2×1201212443² = 2885822666436056498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201212403) 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, 6605 + ... + 49457.

It is an arithmetic number, because the mean of its divisors is an integer number (300320832).

Almost surely, 2^1201212443 is an apocalyptic number.

1201212443 is a deficient number, since it is larger than the sum of its proper divisors (70885).

1201212443 is an equidigital number, since it uses as much as digits as its factorization.

1201212443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70884.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1201212443 is about 34658.5118405277. The cubic root of 1201212443 is about 1063.0163412000.

Adding to 1201212443 its reverse (3442121021), we get a palindrome (4643333464).

The spelling of 1201212443 in words is "one billion, two hundred one million, two hundred twelve thousand, four hundred forty-three".