2121112001069 has 2 divisors, whose sum is σ = 2121112001070. Its totient is φ = 2121112001068.

The previous prime is 2121112001017. The next prime is 2121112001081. The reversal of 2121112001069 is 9601002111212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027738976169 + 93373024900 = 1423987^2 + 305570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121112001069 - 2¹² = 2121111996973 is a prime.

It is a super-2 number, since 2×2121112001069² (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 (2121112001969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060556000534 + 1060556000535.

It is an arithmetic number, because the mean of its divisors is an integer number (1060556000535).

Almost surely, 2^{2121112001069} is an apocalyptic number.

It is an amenable number.

2121112001069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121112001069 is an equidigital number, since it uses as much as digits as its factorization.

2121112001069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 2121112001069 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, one thousand, sixty-nine".