192068221 has 4 divisors (see below), whose sum is σ = 197259292. Its totient is φ = 186877152.

The previous prime is 192068209. The next prime is 192068251. The reversal of 192068221 is 122860291.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69722500 + 122345721 = 8350^2 + 11061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-192068221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192068251) 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, 2595480 + ... + 2595553.

It is an arithmetic number, because the mean of its divisors is an integer number (49314823).

Almost surely, 2^192068221 is an apocalyptic number.

It is an amenable number.

192068221 is a deficient number, since it is larger than the sum of its proper divisors (5191071).

192068221 is an equidigital number, since it uses as much as digits as its factorization.

192068221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5191070.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 192068221 is about 13858.8679552119. The cubic root of 192068221 is about 576.9681476069.

The spelling of 192068221 in words is "one hundred ninety-two million, sixty-eight thousand, two hundred twenty-one".