211120069 has 2 divisors, whose sum is σ = 211120070. Its totient is φ = 211120068.

The previous prime is 211120061. The next prime is 211120079. The reversal of 211120069 is 960021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176757025 + 34363044 = 13295^2 + 5862^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120069 - 2³ = 211120061 is a prime.

It is a super-2 number, since 2×211120069² = 89143367069129522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211120061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560034 + 105560035.

It is an arithmetic number, because the mean of its divisors is an integer number (105560035).

Almost surely, 2^211120069 is an apocalyptic number.

It is an amenable number.

211120069 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120069 is an equidigital number, since it uses as much as digits as its factorization.

211120069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 211120069 is about 14529.9714039636. The cubic root of 211120069 is about 595.4470843556.

The spelling of 211120069 in words is "two hundred eleven million, one hundred twenty thousand, sixty-nine".