213130488821 has 4 divisors (see below), whose sum is σ = 213250428972. Its totient is φ = 213010548672.

The previous prime is 213130488811. The next prime is 213130488847. The reversal of 213130488821 is 128884031312.

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 96739660900 + 116390827921 = 311030^2 + 341161^2 .

It is a cyclic number.

It is not a de Polignac number, because 213130488821 - 2³⁰ = 212056746997 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 (213130488811) 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, 59967410 + ... + 59970963.

It is an arithmetic number, because the mean of its divisors is an integer number (53312607243).

Almost surely, 2^213130488821 is an apocalyptic number.

It is an amenable number.

213130488821 is a deficient number, since it is larger than the sum of its proper divisors (119940151).

213130488821 is a wasteful number, since it uses less digits than its factorization.

213130488821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119940150.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 213130488821 in words is "two hundred thirteen billion, one hundred thirty million, four hundred eighty-eight thousand, eight hundred twenty-one".