22154555120 has 80 divisors (see below), whose sum is σ = 52940450880. Its totient is φ = 8615964672.

The previous prime is 22154555099. The next prime is 22154555141. The reversal of 22154555120 is 2155545122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22154555099) and next prime (22154555141).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×22154555120³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7170536 + ... + 7173624.

It is an arithmetic number, because the mean of its divisors is an integer number (661755636).

Almost surely, 2^22154555120 is an apocalyptic number.

22154555120 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 22154555120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26470225440).

22154555120 is an abundant number, since it is smaller than the sum of its proper divisors (30785895760).

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

22154555120 is a wasteful number, since it uses less digits than its factorization.

22154555120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562 (or 5556 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 22154555120 in words is "twenty-two billion, one hundred fifty-four million, five hundred fifty-five thousand, one hundred twenty".