9969042211 has 4 divisors (see below), whose sum is σ = 10212189624. Its totient is φ = 9725894800.

The previous prime is 9969042179. The next prime is 9969042221. The reversal of 9969042211 is 1122409699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9969042211 - 2⁵ = 9969042179 is a prime.

It is a super-3 number, since 3×9969042211³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9969042221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121573645 + ... + 121573726.

It is an arithmetic number, because the mean of its divisors is an integer number (2553047406).

Almost surely, 2^9969042211 is an apocalyptic number.

9969042211 is a deficient number, since it is larger than the sum of its proper divisors (243147413).

9969042211 is a wasteful number, since it uses less digits than its factorization.

9969042211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243147412.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 9969042211 is about 99845.0910711188. The cubic root of 9969042211 is about 2152.2091740628.

The spelling of 9969042211 in words is "nine billion, nine hundred sixty-nine million, forty-two thousand, two hundred eleven".