21980219822 has 8 divisors (see below), whose sum is σ = 35967632472. Its totient is φ = 9991009000.

The previous prime is 21980219803. The next prime is 21980219827. The reversal of 21980219822 is 22891208912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21980219827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499550429 + ... + 499550472.

It is an arithmetic number, because the mean of its divisors is an integer number (4495954059).

Almost surely, 2^21980219822 is an apocalyptic number.

21980219822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21980219822 is a deficient number, since it is larger than the sum of its proper divisors (13987412650).

21980219822 is a wasteful number, since it uses less digits than its factorization.

21980219822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999100914.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 21980219822 in words is "twenty-one billion, nine hundred eighty million, two hundred nineteen thousand, eight hundred twenty-two".