21000340054022 has 8 divisors (see below), whose sum is σ = 36000582949776. Its totient is φ = 9000145737432.

The previous prime is 21000340054021. The next prime is 21000340054069. The reversal of 21000340054022 is 22045004300012.

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 not an unprimeable number, because it can be changed into a prime (21000340054021) 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, 750012144773 + ... + 750012144800.

It is an arithmetic number, because the mean of its divisors is an integer number (4500072868722).

Almost surely, 2^{21000340054022} is an apocalyptic number.

21000340054022 is a deficient number, since it is larger than the sum of its proper divisors (15000242895754).

21000340054022 is a wasteful number, since it uses less digits than its factorization.

21000340054022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500024289582.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 21000340054022 its reverse (22045004300012), we get a palindrome (43045344354034).

The spelling of 21000340054022 in words is "twenty-one trillion, three hundred forty million, fifty-four thousand, twenty-two".