2001122069 has 2 divisors, whose sum is σ = 2001122070. Its totient is φ = 2001122068.

The previous prime is 2001121999. The next prime is 2001122077. The reversal of 2001122069 is 9602211002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1407225169 + 593896900 = 37513^2 + 24370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001122069 - 2¹² = 2001117973 is a prime.

It is a super-2 number, since 2×2001122069² = 8008979070077681522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001122099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000561034 + 1000561035.

It is an arithmetic number, because the mean of its divisors is an integer number (1000561035).

Almost surely, 2^2001122069 is an apocalyptic number.

It is an amenable number.

2001122069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001122069 is an equidigital number, since it uses as much as digits as its factorization.

2001122069 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 23.

The square root of 2001122069 is about 44733.9029037262. The cubic root of 2001122069 is about 1260.1566255704.

The spelling of 2001122069 in words is "two billion, one million, one hundred twenty-two thousand, sixty-nine".