1213311202297 has 4 divisors (see below), whose sum is σ = 1214789048676. Its totient is φ = 1211833355920.

The previous prime is 1213311202253. The next prime is 1213311202343. The reversal of 1213311202297 is 7922021133121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 306357822016 + 906953380281 = 553496^2 + 952341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213311202297 - 2¹¹ = 1213311200249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213311202097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738921958 + ... + 738923599.

It is an arithmetic number, because the mean of its divisors is an integer number (303697262169).

Almost surely, 2^{1213311202297} is an apocalyptic number.

It is an amenable number.

1213311202297 is a deficient number, since it is larger than the sum of its proper divisors (1477846379).

1213311202297 is an equidigital number, since it uses as much as digits as its factorization.

1213311202297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477846378.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 1213311202297 in words is "one trillion, two hundred thirteen billion, three hundred eleven million, two hundred two thousand, two hundred ninety-seven".