1421033321209 has 2 divisors, whose sum is σ = 1421033321210. Its totient is φ = 1421033321208.

The previous prime is 1421033321119. The next prime is 1421033321249. The reversal of 1421033321209 is 9021233301241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1311437232400 + 109596088809 = 1145180^2 + 331053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421033321209 - 2¹³ = 1421033313017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421033321249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710516660604 + 710516660605.

It is an arithmetic number, because the mean of its divisors is an integer number (710516660605).

Almost surely, 2^{1421033321209} is an apocalyptic number.

It is an amenable number.

1421033321209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421033321209 is an equidigital number, since it uses as much as digits as its factorization.

1421033321209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 1421033321209 in words is "one trillion, four hundred twenty-one billion, thirty-three million, three hundred twenty-one thousand, two hundred nine".