21222364060661 has 8 divisors (see below), whose sum is σ = 21241045216320. Its totient is φ = 21203689542048.

The previous prime is 21222364060603. The next prime is 21222364060693. The reversal of 21222364060661 is 16606046322212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222364060661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222364060061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4749560 + ... + 8062446.

It is an arithmetic number, because the mean of its divisors is an integer number (2655130652040).

Almost surely, 2^{21222364060661} is an apocalyptic number.

It is an amenable number.

21222364060661 is a deficient number, since it is larger than the sum of its proper divisors (18681155659).

21222364060661 is a wasteful number, since it uses less digits than its factorization.

21222364060661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318523.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 21222364060661 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred sixty-four million, sixty thousand, six hundred sixty-one".