1212332045 has 4 divisors (see below), whose sum is σ = 1454798460. Its totient is φ = 969865632.

The previous prime is 1212332021. The next prime is 1212332057. The reversal of 1212332045 is 5402332121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 634939204 + 577392841 = 25198^2 + 24029^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212332045 - 2¹⁴ = 1212315661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212332045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121233200 + ... + 121233209.

It is an arithmetic number, because the mean of its divisors is an integer number (363699615).

Almost surely, 2^1212332045 is an apocalyptic number.

It is an amenable number.

1212332045 is a deficient number, since it is larger than the sum of its proper divisors (242466415).

1212332045 is an equidigital number, since it uses as much as digits as its factorization.

1212332045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242466414.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1212332045 is about 34818.5589161872. The cubic root of 1212332045 is about 1066.2863793560.

Adding to 1212332045 its reverse (5402332121), we get a palindrome (6614664166).

The spelling of 1212332045 in words is "one billion, two hundred twelve million, three hundred thirty-two thousand, forty-five".