2211161966 has 8 divisors (see below), whose sum is σ = 3571877064. Its totient is φ = 1020536280.

The previous prime is 2211161963. The next prime is 2211162071. The reversal of 2211161966 is 6691611122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211161963) 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, 42522320 + ... + 42522371.

It is an arithmetic number, because the mean of its divisors is an integer number (446484633).

Almost surely, 2^2211161966 is an apocalyptic number.

2211161966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2211161966 is a deficient number, since it is larger than the sum of its proper divisors (1360715098).

2211161966 is a wasteful number, since it uses less digits than its factorization.

2211161966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85044706.

The product of its digits is 7776, while the sum is 35.

The square root of 2211161966 is about 47022.9940135674. The cubic root of 2211161966 is about 1302.7873066940.

The spelling of 2211161966 in words is "two billion, two hundred eleven million, one hundred sixty-one thousand, nine hundred sixty-six".