21224522366606 has 64 divisors (see below), whose sum is σ = 36354001582080. Its totient is φ = 9222272599680.

The previous prime is 21224522366599. The next prime is 21224522366627. The reversal of 21224522366606 is 60666322542212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202110845 + ... + 202215831.

It is an arithmetic number, because the mean of its divisors is an integer number (568031274720).

Almost surely, 2^{21224522366606} is an apocalyptic number.

21224522366606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21224522366606 is a deficient number, since it is larger than the sum of its proper divisors (15129479215474).

21224522366606 is a wasteful number, since it uses less digits than its factorization.

21224522366606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111849.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 21224522366606 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred twenty-two million, three hundred sixty-six thousand, six hundred six".