1143141221 has 2 divisors, whose sum is σ = 1143141222. Its totient is φ = 1143141220.

The previous prime is 1143141199. The next prime is 1143141271. The reversal of 1143141221 is 1221413411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089924196 + 53217025 = 33014^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143141221 - 2³⁰ = 69399397 is a prime.

It is a super-2 number, since 2×1143141221² = 2613543702298741682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143141193 and 1143141202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143141271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571570610 + 571570611.

It is an arithmetic number, because the mean of its divisors is an integer number (571570611).

Almost surely, 2^1143141221 is an apocalyptic number.

It is an amenable number.

1143141221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143141221 is an equidigital number, since it uses as much as digits as its factorization.

1143141221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 20.

The square root of 1143141221 is about 33810.3715004730. The cubic root of 1143141221 is about 1045.6025373703.

Adding to 1143141221 its reverse (1221413411), we get a palindrome (2364554632).

The spelling of 1143141221 in words is "one billion, one hundred forty-three million, one hundred forty-one thousand, two hundred twenty-one".