22211344980 has 144 divisors (see below), whose sum is σ = 73647100800. Its totient is φ = 5373745920.

The previous prime is 22211344957. The next prime is 22211345027. The reversal of 22211344980 is 8944311222.

22211344980 is a `hidden beast` number, since 2 + 22 + 113 + 449 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 996801 + ... + 1018839.

It is an arithmetic number, because the mean of its divisors is an integer number (511438200).

Almost surely, 2^22211344980 is an apocalyptic number.

22211344980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22211344980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36823550400).

22211344980 is an abundant number, since it is smaller than the sum of its proper divisors (51435755820).

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

22211344980 is a wasteful number, since it uses less digits than its factorization.

22211344980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22574 (or 22569 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 22211344980 in words is "twenty-two billion, two hundred eleven million, three hundred forty-four thousand, nine hundred eighty".