3143421221 has 2 divisors, whose sum is σ = 3143421222. Its totient is φ = 3143421220.

The previous prime is 3143421167. The next prime is 3143421223. The reversal of 3143421221 is 1221243413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3048144100 + 95277121 = 55210^2 + 9761^2 .

It is a cyclic number.

It is not a de Polignac number, because 3143421221 - 2¹⁰ = 3143420197 is a prime.

Together with 3143421223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3143421223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571710610 + 1571710611.

It is an arithmetic number, because the mean of its divisors is an integer number (1571710611).

Almost surely, 2^3143421221 is an apocalyptic number.

It is an amenable number.

3143421221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3143421221 is an equidigital number, since it uses as much as digits as its factorization.

3143421221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 3143421221 is about 56066.2217471447. The cubic root of 3143421221 is about 1464.8759882137.

Adding to 3143421221 its reverse (1221243413), we get a palindrome (4364664634).

The spelling of 3143421221 in words is "three billion, one hundred forty-three million, four hundred twenty-one thousand, two hundred twenty-one".