213433142421 has 8 divisors (see below), whose sum is σ = 288475845760. Its totient is φ = 140339600352.

The previous prime is 213433142411. The next prime is 213433142431. The reversal of 213433142421 is 124241334312.

213433142421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213433142411) and next prime (213433142431).

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

It is not a de Polignac number, because 213433142421 - 2⁶ = 213433142357 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 (213433142411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487290061 + ... + 487290498.

It is an arithmetic number, because the mean of its divisors is an integer number (36059480720).

Almost surely, 2^213433142421 is an apocalyptic number.

It is an amenable number.

213433142421 is a deficient number, since it is larger than the sum of its proper divisors (75042703339).

213433142421 is an equidigital number, since it uses as much as digits as its factorization.

213433142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974580635.

The product of its digits is 13824, while the sum is 30.

Adding to 213433142421 its reverse (124241334312), we get a palindrome (337674476733).

The spelling of 213433142421 in words is "two hundred thirteen billion, four hundred thirty-three million, one hundred forty-two thousand, four hundred twenty-one".