1212301312 has 60 divisors (see below), whose sum is σ = 2466306556. Its totient is φ = 595722240.

The previous prime is 1212301309. The next prime is 1212301351. The reversal of 1212301312 is 2131032121.

It can be written as a sum of positive squares in 2 ways, for example, as 44302336 + 1167998976 = 6656^2 + 34176^2 .

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998818 + ... + 1000030.

Almost surely, 2^1212301312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212301312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233153278).

1212301312 is an abundant number, since it is smaller than the sum of its proper divisors (1254005244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212301312 is an frugal number, since it uses more digits than its factorization.

1212301312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212301312 is about 34818.1175826609. The cubic root of 1212301312 is about 1066.2773690478.

Adding to 1212301312 its reverse (2131032121), we get a palindrome (3343333433).

The spelling of 1212301312 in words is "one billion, two hundred twelve million, three hundred one thousand, three hundred twelve".