2122361666 has 8 divisors (see below), whose sum is σ = 3199540800. Its totient is φ = 1055848068.

The previous prime is 2122361653. The next prime is 2122361677. The reversal of 2122361666 is 6661632212.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2665886 + ... + 2666681.

It is an arithmetic number, because the mean of its divisors is an integer number (399942600).

Almost surely, 2^2122361666 is an apocalyptic number.

2122361666 is a deficient number, since it is larger than the sum of its proper divisors (1077179134).

2122361666 is a wasteful number, since it uses less digits than its factorization.

2122361666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332768.

The product of its digits is 31104, while the sum is 35.

The square root of 2122361666 is about 46069.0966484041. The cubic root of 2122361666 is about 1285.1085044160.

Adding to 2122361666 its reverse (6661632212), we get a palindrome (8783993878).

The spelling of 2122361666 in words is "two billion, one hundred twenty-two million, three hundred sixty-one thousand, six hundred sixty-six".