213371550745621 has 8 divisors (see below), whose sum is σ = 213401212757784. Its totient is φ = 213341889446400.

The previous prime is 213371550745609. The next prime is 213371550745663. The reversal of 213371550745621 is 126547055173312.

213371550745621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34927639021521 + 178443911724100 = 5909961^2 + 13358290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213371550745621 - 2³⁵ = 213337191007253 is a prime.

It is a super-2 number, since 2×213371550745621² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213371550745121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914851821 + ... + 915085021.

It is an arithmetic number, because the mean of its divisors is an integer number (26675151594723).

Almost surely, 2^{213371550745621} is an apocalyptic number.

It is an amenable number.

213371550745621 is a deficient number, since it is larger than the sum of its proper divisors (29662012163).

213371550745621 is a wasteful number, since it uses less digits than its factorization.

213371550745621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356471.

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 213371550745621 in words is "two hundred thirteen trillion, three hundred seventy-one billion, five hundred fifty million, seven hundred forty-five thousand, six hundred twenty-one".