22182123780 has 288 divisors, whose sum is σ = 74527165440. Its totient is φ = 5525936640.

The previous prime is 22182123767. The next prime is 22182123791. The reversal of 22182123780 is 8732128122.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4366602 + ... + 4371678.

It is an arithmetic number, because the mean of its divisors is an integer number (258774880).

Almost surely, 2^22182123780 is an apocalyptic number.

22182123780 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 22182123780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37263582720).

22182123780 is an abundant number, since it is smaller than the sum of its proper divisors (52345041660).

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

22182123780 is a wasteful number, since it uses less digits than its factorization.

22182123780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161 (or 5147 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 22182123780 in words is "twenty-two billion, one hundred eighty-two million, one hundred twenty-three thousand, seven hundred eighty".