21622025336249 has 20 divisors (see below), whose sum is σ = 23434824911364. Its totient is φ = 19949396673024.

The previous prime is 21622025336209. The next prime is 21622025336293. The reversal of 21622025336249 is 94263352022612.

It can be written as a sum of positive squares in 10 ways, for example, as 17113486554025 + 4508538782224 = 4136845^2 + 2123332^2 .

It is not a de Polignac number, because 21622025336249 - 2⁸ = 21622025335993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21622025336209) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 60857729 + ... + 61211985.

Almost surely, 2^{21622025336249} is an apocalyptic number.

It is an amenable number.

21622025336249 is a deficient number, since it is larger than the sum of its proper divisors (1812799575115).

21622025336249 is an frugal number, since it uses more digits than its factorization.

21622025336249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356446 (or 356407 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 21622025336249 in words is "twenty-one trillion, six hundred twenty-two billion, twenty-five million, three hundred thirty-six thousand, two hundred forty-nine".