121020200311 has 2 divisors, whose sum is σ = 121020200312. Its totient is φ = 121020200310.

The previous prime is 121020200293. The next prime is 121020200333. The reversal of 121020200311 is 113002020121.

It is a weak prime.

It is an emirp because it is prime and its reverse (113002020121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121020200311 - 2¹¹ = 121020198263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121020200291 and 121020200300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020209311) 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, 60510100155 + 60510100156.

It is an arithmetic number, because the mean of its divisors is an integer number (60510100156).

Almost surely, 2^121020200311 is an apocalyptic number.

121020200311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020200311 is an equidigital number, since it uses as much as digits as its factorization.

121020200311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121020200311 its reverse (113002020121), we get a palindrome (234022220432).

The spelling of 121020200311 in words is "one hundred twenty-one billion, twenty million, two hundred thousand, three hundred eleven".