8521422000 has 320 divisors, whose sum is σ = 33815169024. Its totient is φ = 1797811200.

The previous prime is 8521421981. The next prime is 8521422127. The reversal of 8521422000 is 2241258.

It is a super-2 number, since 2×8521422000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 538197 + ... + 553803.

Almost surely, 2^8521422000 is an apocalyptic number.

8521422000 is a gapful number since it is divisible by the number (80) 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 8521422000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16907584512).

8521422000 is an abundant number, since it is smaller than the sum of its proper divisors (25293747024).

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

8521422000 is a wasteful number, since it uses less digits than its factorization.

8521422000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15653 (or 15637 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 8521422000 is about 92311.5485732961. The cubic root of 8521422000 is about 2042.5405679027.

Adding to 8521422000 its reverse (2241258), we get a palindrome (8523663258).

The spelling of 8521422000 in words is "eight billion, five hundred twenty-one million, four hundred twenty-two thousand".