1212181296 has 80 divisors (see below), whose sum is σ = 3187081728. Its totient is φ = 396928000.

The previous prime is 1212181283. The next prime is 1212181297. The reversal of 1212181296 is 6921812121.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1212181297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1366165 + ... + 1367051.

Almost surely, 2^1212181296 is an apocalyptic number.

1212181296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212181296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593540864).

1212181296 is an abundant number, since it is smaller than the sum of its proper divisors (1974900432).

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

1212181296 is a wasteful number, since it uses less digits than its factorization.

1212181296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1364 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 1212181296 is about 34816.3940694610. The cubic root of 1212181296 is about 1066.2421812699.

The spelling of 1212181296 in words is "one billion, two hundred twelve million, one hundred eighty-one thousand, two hundred ninety-six".