1066141221 has 4 divisors (see below), whose sum is σ = 1421521632. Its totient is φ = 710760812.

The previous prime is 1066141207. The next prime is 1066141229. The reversal of 1066141221 is 1221416601.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1221416601 = 3 ⋅407138867.

It is a cyclic number.

It is not a de Polignac number, because 1066141221 - 2⁷ = 1066141093 is a prime.

It is a super-2 number, since 2×1066141221² = 2273314206230741682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066141191 and 1066141200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066141229) 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, 177690201 + ... + 177690206.

It is an arithmetic number, because the mean of its divisors is an integer number (355380408).

Almost surely, 2^1066141221 is an apocalyptic number.

It is an amenable number.

1066141221 is a deficient number, since it is larger than the sum of its proper divisors (355380411).

1066141221 is an equidigital number, since it uses as much as digits as its factorization.

1066141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355380410.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1066141221 is about 32651.8180351416. The cubic root of 1066141221 is about 1021.5781098142.

Adding to 1066141221 its reverse (1221416601), we get a palindrome (2287557822).

The spelling of 1066141221 in words is "one billion, sixty-six million, one hundred forty-one thousand, two hundred twenty-one".