20342021213 has 8 divisors (see below), whose sum is σ = 20770622208. Its totient is φ = 19915079184.

The previous prime is 20342021173. The next prime is 20342021233. The reversal of 20342021213 is 31212024302.

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 20342021213 - 2¹⁰ = 20342020189 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 (20342021233) 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, 389945 + ... + 439022.

It is an arithmetic number, because the mean of its divisors is an integer number (2596327776).

Almost surely, 2^20342021213 is an apocalyptic number.

It is an amenable number.

20342021213 is a deficient number, since it is larger than the sum of its proper divisors (428600995).

20342021213 is an equidigital number, since it uses as much as digits as its factorization.

20342021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829483.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20342021213 its reverse (31212024302), we get a palindrome (51554045515).

The spelling of 20342021213 in words is "twenty billion, three hundred forty-two million, twenty-one thousand, two hundred thirteen".