121202212213 has 2 divisors, whose sum is σ = 121202212214. Its totient is φ = 121202212212.

The previous prime is 121202212193. The next prime is 121202212217. The reversal of 121202212213 is 312212202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74300946724 + 46901265489 = 272582^2 + 216567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202212213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121202212217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601106106 + 60601106107.

It is an arithmetic number, because the mean of its divisors is an integer number (60601106107).

Almost surely, 2^121202212213 is an apocalyptic number.

It is an amenable number.

121202212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202212213 is an equidigital number, since it uses as much as digits as its factorization.

121202212213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121202212213 its reverse (312212202121), we get a palindrome (433414414334).

The spelling of 121202212213 in words is "one hundred twenty-one billion, two hundred two million, two hundred twelve thousand, two hundred thirteen".