21622203372275 has 48 divisors (see below), whose sum is σ = 29306476408320. Its totient is φ = 15694317417600.

The previous prime is 21622203372251. The next prime is 21622203372307. The reversal of 21622203372275 is 57227330222612.

It is not a de Polignac number, because 21622203372275 - 2¹² = 21622203368179 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 1507081652 + ... + 1507095998.

It is an arithmetic number, because the mean of its divisors is an integer number (610551591840).

Almost surely, 2^{21622203372275} is an apocalyptic number.

21622203372275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21622203372275 is a deficient number, since it is larger than the sum of its proper divisors (7684273036045).

21622203372275 is a wasteful number, since it uses less digits than its factorization.

21622203372275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24764 (or 24759 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 44.

Adding to 21622203372275 its reverse (57227330222612), we get a palindrome (78849533594887).

It can be divided in two parts, 2162220337 and 2275, that added together give a palindrome (2162222612).

The spelling of 21622203372275 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred three million, three hundred seventy-two thousand, two hundred seventy-five".