1212615011344 has 135 divisors (see below), whose sum is σ = 2677667272189. Its totient is φ = 531565471360.

The previous prime is 1212615011327. The next prime is 1212615011359. The reversal of 1212615011344 is 4431105162121.

The square root of 1212615011344 is 1101188.

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., 635865897744 + 576749113600 = 797412^2 + 759440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1405115457 + ... + 1405116319.

Almost surely, 2^{1212615011344} is an apocalyptic number.

1212615011344 is the 1101188-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212615011344

1212615011344 is an abundant number, since it is smaller than the sum of its proper divisors (1465052260845).

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

1212615011344 is an frugal number, since it uses more digits than its factorization.

1212615011344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 1212615011344 in words is "one trillion, two hundred twelve billion, six hundred fifteen million, eleven thousand, three hundred forty-four".