1212433441 has 4 divisors (see below), whose sum is σ = 1217637252. Its totient is φ = 1207229632.

The previous prime is 1212433433. The next prime is 1212433447. The reversal of 1212433441 is 1443342121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1443342121 = 13 ⋅111026317.

It can be written as a sum of positive squares in 2 ways, for example, as 468289600 + 744143841 = 21640^2 + 27279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212433441 - 2³ = 1212433433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212433447) 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, 2601556 + ... + 2602021.

It is an arithmetic number, because the mean of its divisors is an integer number (304409313).

Almost surely, 2^1212433441 is an apocalyptic number.

It is an amenable number.

1212433441 is a deficient number, since it is larger than the sum of its proper divisors (5203811).

1212433441 is an equidigital number, since it uses as much as digits as its factorization.

1212433441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203810.

The product of its digits is 2304, while the sum is 25.

The square root of 1212433441 is about 34820.0149483024. The cubic root of 1212433441 is about 1066.3161055794.

Adding to 1212433441 its reverse (1443342121), we get a palindrome (2655775562).

The spelling of 1212433441 in words is "one billion, two hundred twelve million, four hundred thirty-three thousand, four hundred forty-one".