2066422174221 has 4 divisors (see below), whose sum is σ = 2755229565632. Its totient is φ = 1377614782812.

The previous prime is 2066422174121. The next prime is 2066422174249. The reversal of 2066422174221 is 1224712246602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2066422174221 - 2⁹ = 2066422173709 is a prime.

It is a super-2 number, since 2×2066422174221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2066422174221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066422174121) 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, 344403695701 + ... + 344403695706.

It is an arithmetic number, because the mean of its divisors is an integer number (688807391408).

Almost surely, 2^{2066422174221} is an apocalyptic number.

It is an amenable number.

2066422174221 is a deficient number, since it is larger than the sum of its proper divisors (688807391411).

2066422174221 is an equidigital number, since it uses as much as digits as its factorization.

2066422174221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688807391410.

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 2066422174221 in words is "two trillion, sixty-six billion, four hundred twenty-two million, one hundred seventy-four thousand, two hundred twenty-one".