5321355212021 has 4 divisors (see below), whose sum is σ = 5394250488972. Its totient is φ = 5248459935072.

The previous prime is 5321355212011. The next prime is 5321355212023. The reversal of 5321355212021 is 1202125531235.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2518362694225 + 2802992517796 = 1586935^2 + 1674214^2 .

It is a cyclic number.

It is not a de Polignac number, because 5321355212021 - 2¹⁸ = 5321354949877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321355212023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36447638366 + ... + 36447638511.

It is an arithmetic number, because the mean of its divisors is an integer number (1348562622243).

Almost surely, 2^{5321355212021} is an apocalyptic number.

It is an amenable number.

5321355212021 is a deficient number, since it is larger than the sum of its proper divisors (72895276951).

5321355212021 is an equidigital number, since it uses as much as digits as its factorization.

5321355212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72895276950.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 5321355212021 in words is "five trillion, three hundred twenty-one billion, three hundred fifty-five million, two hundred twelve thousand, twenty-one".