21032505142122 has 8 divisors (see below), whose sum is σ = 42065010284256. Its totient is φ = 7010835047372.

The previous prime is 21032505142111. The next prime is 21032505142163. The reversal of 21032505142122 is 22124150523012.

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

21032505142122 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21032505142122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1752708761838 + ... + 1752708761849.

It is an arithmetic number, because the mean of its divisors is an integer number (5258126285532).

Almost surely, 2^{21032505142122} is an apocalyptic number.

21032505142122 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.

21032505142122 is a wasteful number, since it uses less digits than its factorization.

21032505142122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505417523692.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 21032505142122 its reverse (22124150523012), we get a palindrome (43156655665134).

The spelling of 21032505142122 in words is "twenty-one trillion, thirty-two billion, five hundred five million, one hundred forty-two thousand, one hundred twenty-two".