213440132021 has 8 divisors (see below), whose sum is σ = 225103420320. Its totient is φ = 201819803472.

The previous prime is 213440131999. The next prime is 213440132033. The reversal of 213440132021 is 120231044312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213440132021 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 (213640132021) 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, 10729730 + ... + 10749603.

It is an arithmetic number, because the mean of its divisors is an integer number (28137927540).

Almost surely, 2^213440132021 is an apocalyptic number.

It is an amenable number.

213440132021 is a deficient number, since it is larger than the sum of its proper divisors (11663288299).

213440132021 is a wasteful number, since it uses less digits than its factorization.

213440132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21479875.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 213440132021 its reverse (120231044312), we get a palindrome (333671176333).

The spelling of 213440132021 in words is "two hundred thirteen billion, four hundred forty million, one hundred thirty-two thousand, twenty-one".