22021530000400 has 90 divisors (see below), whose sum is σ = 61544558668650. Its totient is φ = 7550238850560.

The previous prime is 22021530000367. The next prime is 22021530000401. The reversal of 22021530000400 is 400003512022.

It can be written as a sum of positive squares in 3 ways, for example, as 2081625670656 + 19939904329744 = 1442784^2 + 4465412^2 .

It is not an unprimeable number, because it can be changed into a prime (22021530000401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 561754125 + ... + 561793324.

Almost surely, 2^{22021530000400} is an apocalyptic number.

22021530000400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021530000400 is an abundant number, since it is smaller than the sum of its proper divisors (39523028668250).

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

22021530000400 is a wasteful number, since it uses less digits than its factorization.

22021530000400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123547481 (or 1123547463 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 22021530000400 its reverse (400003512022), we get a palindrome (22421533512422).

The spelling of 22021530000400 in words is "twenty-two trillion, twenty-one billion, five hundred thirty million, four hundred", and thus it is an aban number.