1213630519201 has 3 divisors (see below), whose sum is σ = 1213631620851. Its totient is φ = 1213629417552.

The previous prime is 1213630519183. The next prime is 1213630519217. The reversal of 1213630519201 is 1029150363121.

The square root of 1213630519201 is 1101649.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 757681461601 + 455949057600 = 870449^2 + 675240^2 .

It is not a de Polignac number, because 1213630519201 - 2⁵ = 1213630519169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213630519271) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 550825 + ... + 1652473.

It is an arithmetic number, because the mean of its divisors is an integer number (404543873617).

Almost surely, 2^{1213630519201} is an apocalyptic number.

1213630519201 is the 1101649-th square number.

1213630519201 is the 550825-th centered octagonal number.

It is an amenable number.

1213630519201 is a deficient number, since it is larger than the sum of its proper divisors (1101650).

1213630519201 is an frugal number, since it uses more digits than its factorization.

1213630519201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203298 (or 1101649 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 1213630519201 in words is "one trillion, two hundred thirteen billion, six hundred thirty million, five hundred nineteen thousand, two hundred one".