143321021009 has 2 divisors, whose sum is σ = 143321021010. Its totient is φ = 143321021008.

The previous prime is 143321020979. The next prime is 143321021057. The reversal of 143321021009 is 900120123341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140823820225 + 2497200784 = 375265^2 + 49972^2 .

It is a cyclic number.

It is not a de Polignac number, because 143321021009 - 2¹⁶ = 143320955473 is a prime.

It is not a weakly prime, because it can be changed into another prime (143321021509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71660510504 + 71660510505.

It is an arithmetic number, because the mean of its divisors is an integer number (71660510505).

Almost surely, 2^143321021009 is an apocalyptic number.

It is an amenable number.

143321021009 is a deficient number, since it is larger than the sum of its proper divisors (1).

143321021009 is an equidigital number, since it uses as much as digits as its factorization.

143321021009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 143321021009 in words is "one hundred forty-three billion, three hundred twenty-one million, twenty-one thousand, nine".