121230202213 has 2 divisors, whose sum is σ = 121230202214. Its totient is φ = 121230202212.

The previous prime is 121230202153. The next prime is 121230202243. The reversal of 121230202213 is 312202032121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80765661249 + 40464540964 = 284193^2 + 201158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121230202213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121230202243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615101106 + 60615101107.

It is an arithmetic number, because the mean of its divisors is an integer number (60615101107).

Almost surely, 2^121230202213 is an apocalyptic number.

It is an amenable number.

121230202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230202213 is an equidigital number, since it uses as much as digits as its factorization.

121230202213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121230202213 its reverse (312202032121), we get a palindrome (433432234334).

The spelling of 121230202213 in words is "one hundred twenty-one billion, two hundred thirty million, two hundred two thousand, two hundred thirteen".