21332001023009 has 2 divisors, whose sum is σ = 21332001023010. Its totient is φ = 21332001023008.

The previous prime is 21332001022987. The next prime is 21332001023041. The reversal of 21332001023009 is 90032010023312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13264855989025 + 8067145033984 = 3642095^2 + 2840272^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332001023009 - 2⁴⁴ = 3739814978593 is a prime.

It is not a weakly prime, because it can be changed into another prime (21332001025009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666000511504 + 10666000511505.

It is an arithmetic number, because the mean of its divisors is an integer number (10666000511505).

Almost surely, 2^{21332001023009} is an apocalyptic number.

It is an amenable number.

21332001023009 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332001023009 is an equidigital number, since it uses as much as digits as its factorization.

21332001023009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 21332001023009 in words is "twenty-one trillion, three hundred thirty-two billion, one million, twenty-three thousand, nine".