22197078000 has 240 divisors, whose sum is σ = 80400124896. Its totient is φ = 5919091200.

The previous prime is 22197077899. The next prime is 22197078017. The reversal of 22197078000 is 87079122.

It is a tau number, because it is divible by the number of its divisors (240).

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, 463164 + ... + 508836.

Almost surely, 2^22197078000 is an apocalyptic number.

22197078000 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 22197078000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40200062448).

22197078000 is an abundant number, since it is smaller than the sum of its proper divisors (58203046896).

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

22197078000 is an equidigital number, since it uses as much as digits as its factorization.

22197078000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45711 (or 45683 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 22197078000 in words is "twenty-two billion, one hundred ninety-seven million, seventy-eight thousand".