21022034342 has 8 divisors (see below), whose sum is σ = 31536034176. Its totient is φ = 10510022952.

The previous prime is 21022034303. The next prime is 21022034347. The reversal of 21022034342 is 24343022012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022034347) 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, 470393 + ... + 513140.

It is an arithmetic number, because the mean of its divisors is an integer number (3942004272).

Almost surely, 2^21022034342 is an apocalyptic number.

21022034342 is a deficient number, since it is larger than the sum of its proper divisors (10513999834).

21022034342 is a wasteful number, since it uses less digits than its factorization.

21022034342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994222.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21022034342 its reverse (24343022012), we get a palindrome (45365056354).

The spelling of 21022034342 in words is "twenty-one billion, twenty-two million, thirty-four thousand, three hundred forty-two".