22221152448 has 252 divisors, whose sum is σ = 66355280040.
Its totient is φ = 6557900800.
The previous prime is 22221152381. The next prime is 22221152467. The reversal of 22221152448 is 84425112222.
It is a super-2 number, since 2×222211524482 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (33).
It is an unprimeable number.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39052708 + ... + 39053276.
Almost surely, 222221152448 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 22221152448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33177640020).
22221152448 is an abundant number, since it is smaller than the sum of its proper divisors (44134127592).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22221152448 is a wasteful number, since it uses less digits than its factorization.
22221152448 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 688 (or 626 counting only the distinct ones).
The product of its digits is 20480, while the sum is 33.
The spelling of 22221152448 in words is "twenty-two billion, two hundred twenty-one million, one hundred fifty-two thousand, four hundred forty-eight".