18483021010021 has 2 divisors, whose sum is σ = 18483021010022. Its totient is φ = 18483021010020.

The previous prime is 18483021009913. The next prime is 18483021010033. The reversal of 18483021010021 is 12001012038481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12153318517921 + 6329702492100 = 3486161^2 + 2515890^2 .

It is an emirp because it is prime and its reverse (12001012038481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18483021010021 - 2⁴¹ = 16283997754469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18483021010061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9241510505010 + 9241510505011.

It is an arithmetic number, because the mean of its divisors is an integer number (9241510505011).

Almost surely, 2^{18483021010021} is an apocalyptic number.

It is an amenable number.

18483021010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

18483021010021 is an equidigital number, since it uses as much as digits as its factorization.

18483021010021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 31.

The spelling of 18483021010021 in words is "eighteen trillion, four hundred eighty-three billion, twenty-one million, ten thousand, twenty-one".