1241209897216 has 81 divisors (see below), whose sum is σ = 2497911146941. Its totient is φ = 615551409152.

The previous prime is 1241209897189. The next prime is 1241209897223. The reversal of 1241209897216 is 6127989021421.

The square root of 1241209897216 is 1114096.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 293001359616 + 948208537600 = 541296^2 + 973760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3190770750 + ... + 3190771138.

Almost surely, 2^{1241209897216} is an apocalyptic number.

1241209897216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1241209897216 is the 1114096-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1241209897216

1241209897216 is an abundant number, since it is smaller than the sum of its proper divisors (1256701249725).

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

1241209897216 is an frugal number, since it uses more digits than its factorization.

1241209897216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 1241209897216 in words is "one trillion, two hundred forty-one billion, two hundred nine million, eight hundred ninety-seven thousand, two hundred sixteen".