10221043223440 has 80 divisors (see below), whose sum is σ = 27159997756032. Its totient is φ = 3504199514112.

The previous prime is 10221043223429. The next prime is 10221043223459. The reversal of 10221043223440 is 4432234012201.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 10221043223399 and 10221043223408.

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, 12360232 + ... + 13161208.

Almost surely, 2^{10221043223440} is an apocalyptic number.

10221043223440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221043223440 is an abundant number, since it is smaller than the sum of its proper divisors (16938954532592).

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

10221043223440 is a wasteful number, since it uses less digits than its factorization.

10221043223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823784 (or 823778 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 10221043223440 its reverse (4432234012201), we get a palindrome (14653277235641).

The spelling of 10221043223440 in words is "ten trillion, two hundred twenty-one billion, forty-three million, two hundred twenty-three thousand, four hundred forty".