121121220200213 has 2 divisors, whose sum is σ = 121121220200214. Its totient is φ = 121121220200212.

The previous prime is 121121220200177. The next prime is 121121220200231. The reversal of 121121220200213 is 312002022121121.

Together with next prime (121121220200231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71508383925169 + 49612836275044 = 8456263^2 + 7043638^2 .

It is a cyclic number.

It is not a de Polignac number, because 121121220200213 - 2³⁶ = 121052500723477 is a prime.

It is a super-3 number, since 3×121121220200213³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121220200243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560610100106 + 60560610100107.

It is an arithmetic number, because the mean of its divisors is an integer number (60560610100107).

Almost surely, 2^{121121220200213} is an apocalyptic number.

It is an amenable number.

121121220200213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121220200213 is an equidigital number, since it uses as much as digits as its factorization.

121121220200213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121121220200213 its reverse (312002022121121), we get a palindrome (433123242321334).

The spelling of 121121220200213 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, two hundred thirteen".