1211413072 has 10 divisors (see below), whose sum is σ = 2347112858. Its totient is φ = 605706528.

The previous prime is 1211413067. The next prime is 1211413117. The reversal of 1211413072 is 2703141121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1202979856 + 8433216 = 34684^2 + 2904^2 .

It is a super-3 number, since 3×1211413072³ (a number of 28 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 37856643 + ... + 37856674.

Almost surely, 2^1211413072 is an apocalyptic number.

It is an amenable number.

1211413072 is a deficient number, since it is larger than the sum of its proper divisors (1135699786).

1211413072 is an equidigital number, since it uses as much as digits as its factorization.

1211413072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75713325 (or 75713319 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1211413072 is about 34805.3598171316. The cubic root of 1211413072 is about 1066.0168888059.

Adding to 1211413072 its reverse (2703141121), we get a palindrome (3914554193).

The spelling of 1211413072 in words is "one billion, two hundred eleven million, four hundred thirteen thousand, seventy-two".