20222446664 has 16 divisors (see below), whose sum is σ = 43333814400. Its totient is φ = 8666762832.

The previous prime is 20222446661. The next prime is 20222446667. The reversal of 20222446664 is 46664422202.

It is an interprime number because it is at equal distance from previous prime (20222446661) and next prime (20222446667).

It is not an unprimeable number, because it can be changed into a prime (20222446661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180557504 + ... + 180557615.

It is an arithmetic number, because the mean of its divisors is an integer number (2708363400).

Almost surely, 2^20222446664 is an apocalyptic number.

It is an amenable number.

20222446664 is an abundant number, since it is smaller than the sum of its proper divisors (23111367736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20222446664 is a wasteful number, since it uses less digits than its factorization.

20222446664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361115132 (or 361115128 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 20222446664 its reverse (46664422202), we get a palindrome (66886868866).

The spelling of 20222446664 in words is "twenty billion, two hundred twenty-two million, four hundred forty-six thousand, six hundred sixty-four".