2121200934511 has 2 divisors, whose sum is σ = 2121200934512. Its totient is φ = 2121200934510.

The previous prime is 2121200934509. The next prime is 2121200934521. The reversal of 2121200934511 is 1154390021212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121200934511 - 2¹ = 2121200934509 is a prime.

Together with 2121200934509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121200934521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060600467255 + 1060600467256.

It is an arithmetic number, because the mean of its divisors is an integer number (1060600467256).

Almost surely, 2^{2121200934511} is an apocalyptic number.

2121200934511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121200934511 is an equidigital number, since it uses as much as digits as its factorization.

2121200934511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 2121200934511 its reverse (1154390021212), we get a palindrome (3275590955723).

The spelling of 2121200934511 in words is "two trillion, one hundred twenty-one billion, two hundred million, nine hundred thirty-four thousand, five hundred eleven".