1121121202213 has 2 divisors, whose sum is σ = 1121121202214. Its totient is φ = 1121121202212.

The previous prime is 1121121202199. The next prime is 1121121202219. The reversal of 1121121202213 is 3122021211211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873135129889 + 247986072324 = 934417^2 + 497982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121121202213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121121202219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560560601106 + 560560601107.

It is an arithmetic number, because the mean of its divisors is an integer number (560560601107).

Almost surely, 2^{1121121202213} is an apocalyptic number.

It is an amenable number.

1121121202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121121202213 is an equidigital number, since it uses as much as digits as its factorization.

1121121202213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1121121202213 its reverse (3122021211211), we get a palindrome (4243142413424).

The spelling of 1121121202213 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, two hundred thirteen".