2121041282069 has 2 divisors, whose sum is σ = 2121041282070. Its totient is φ = 2121041282068.

The previous prime is 2121041281991. The next prime is 2121041282081. The reversal of 2121041282069 is 9602821401212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2041860949969 + 79180332100 = 1428937^2 + 281390^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121041282069 - 2²⁰ = 2121040233493 is a prime.

It is a super-2 number, since 2×2121041282069² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121041282869) 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, 1060520641034 + 1060520641035.

It is an arithmetic number, because the mean of its divisors is an integer number (1060520641035).

Almost surely, 2^{2121041282069} is an apocalyptic number.

It is an amenable number.

2121041282069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121041282069 is an equidigital number, since it uses as much as digits as its factorization.

2121041282069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 2121041282069 in words is "two trillion, one hundred twenty-one billion, forty-one million, two hundred eighty-two thousand, sixty-nine".