20021024200342 has 8 divisors (see below), whose sum is σ = 32761675964232. Its totient is φ = 9100465545600.

The previous prime is 20021024200337. The next prime is 20021024200349. The reversal of 20021024200342 is 24300242012002.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 910046554561 = 20021024200342 / (2 + 0 + 0 + 2 + 1 + 0 + 2 + 4 + 2 + 0 + 0 + 3 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021024200349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455023277259 + ... + 455023277302.

It is an arithmetic number, because the mean of its divisors is an integer number (4095209495529).

Almost surely, 2^{20021024200342} is an apocalyptic number.

20021024200342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021024200342 is a deficient number, since it is larger than the sum of its proper divisors (12740651763890).

20021024200342 is a wasteful number, since it uses less digits than its factorization.

20021024200342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910046554574.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20021024200342 its reverse (24300242012002), we get a palindrome (44321266212344).

The spelling of 20021024200342 in words is "twenty trillion, twenty-one billion, twenty-four million, two hundred thousand, three hundred forty-two".