20021344242 has 8 divisors (see below), whose sum is σ = 40042688496. Its totient is φ = 6673781412.

The previous prime is 20021344237. The next prime is 20021344247. The reversal of 20021344242 is 24244312002.

It is an interprime number because it is at equal distance from previous prime (20021344237) and next prime (20021344247).

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

20021344242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20021344247) 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, 1668445348 + ... + 1668445359.

It is an arithmetic number, because the mean of its divisors is an integer number (5005336062).

Almost surely, 2^20021344242 is an apocalyptic number.

20021344242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021344242 is a wasteful number, since it uses less digits than its factorization.

20021344242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336890712.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20021344242 its reverse (24244312002), we get a palindrome (44265656244).

The spelling of 20021344242 in words is "twenty billion, twenty-one million, three hundred forty-four thousand, two hundred forty-two".