21353301142 has 8 divisors (see below), whose sum is σ = 32066228376. Its totient is φ = 10664558352.

The previous prime is 21353301127. The next prime is 21353301209. The reversal of 21353301142 is 24110335312.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6043903 + ... + 6047434.

It is an arithmetic number, because the mean of its divisors is an integer number (4008278547).

Almost surely, 2^21353301142 is an apocalyptic number.

21353301142 is a deficient number, since it is larger than the sum of its proper divisors (10712927234).

21353301142 is a wasteful number, since it uses less digits than its factorization.

21353301142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12092222.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21353301142 its reverse (24110335312), we get a palindrome (45463636454).

The spelling of 21353301142 in words is "twenty-one billion, three hundred fifty-three million, three hundred one thousand, one hundred forty-two".