21222053042325 has 24 divisors (see below), whose sum is σ = 35113973404128. Its totient is φ = 11309768383680.

The previous prime is 21222053042269. The next prime is 21222053042383. The reversal of 21222053042325 is 52324035022212.

It is a happy number.

It is not a de Polignac number, because 21222053042325 - 2¹² = 21222053038229 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 108150142 + ... + 108346191.

It is an arithmetic number, because the mean of its divisors is an integer number (1463082225172).

Almost surely, 2^{21222053042325} is an apocalyptic number.

21222053042325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21222053042325 is a deficient number, since it is larger than the sum of its proper divisors (13891920361803).

21222053042325 is a wasteful number, since it uses less digits than its factorization.

21222053042325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216497653 (or 216497648 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 21222053042325 its reverse (52324035022212), we get a palindrome (73546088064537).

The spelling of 21222053042325 in words is "twenty-one trillion, two hundred twenty-two billion, fifty-three million, forty-two thousand, three hundred twenty-five".