21232002020347 has 2 divisors, whose sum is σ = 21232002020348. Its totient is φ = 21232002020346.

The previous prime is 21232002020269. The next prime is 21232002020363. The reversal of 21232002020347 is 74302020023212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21232002020347 - 2²⁷ = 21231867802619 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232002020447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616001010173 + 10616001010174.

It is an arithmetic number, because the mean of its divisors is an integer number (10616001010174).

Almost surely, 2^{21232002020347} is an apocalyptic number.

21232002020347 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232002020347 is an equidigital number, since it uses as much as digits as its factorization.

21232002020347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 21232002020347 its reverse (74302020023212), we get a palindrome (95534022043559).

The spelling of 21232002020347 in words is "twenty-one trillion, two hundred thirty-two billion, two million, twenty thousand, three hundred forty-seven".