21000323012983 has 2 divisors, whose sum is σ = 21000323012984. Its totient is φ = 21000323012982.

The previous prime is 21000323012957. The next prime is 21000323013083. The reversal of 21000323012983 is 38921032300012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21000323012983 - 2³³ = 20991733078391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000323012183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500161506491 + 10500161506492.

It is an arithmetic number, because the mean of its divisors is an integer number (10500161506492).

Almost surely, 2^{21000323012983} is an apocalyptic number.

21000323012983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000323012983 is an equidigital number, since it uses as much as digits as its factorization.

21000323012983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

Adding to 21000323012983 its reverse (38921032300012), we get a palindrome (59921355312995).

The spelling of 21000323012983 in words is "twenty-one trillion, three hundred twenty-three million, twelve thousand, nine hundred eighty-three".