22220697600 has 936 divisors, whose sum is σ = 88730154240. Its totient is φ = 5494210560.

The previous prime is 22220697571. The next prime is 22220697641. The reversal of 22220697600 is 679602222.

22220697600 is a `hidden beast` number, since 2 + 22 + 20 + 6 + 9 + 7 + 600 = 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 472780777 + ... + 472780823.

Almost surely, 2^22220697600 is an apocalyptic number.

22220697600 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 22220697600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44365077120).

22220697600 is an abundant number, since it is smaller than the sum of its proper divisors (66509456640).

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

22220697600 is an equidigital number, since it uses as much as digits as its factorization.

22220697600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 22220697600 in words is "twenty-two billion, two hundred twenty million, six hundred ninety-seven thousand, six hundred".