2221011040400 has 120 divisors (see below), whose sum is σ = 5535029723520. Its totient is φ = 855430894080.

The previous prime is 2221011040399. The next prime is 2221011040433. The reversal of 2221011040400 is 40401101222.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3996347 + ... + 4518053.

It is an arithmetic number, because the mean of its divisors is an integer number (46125247696).

Almost surely, 2^{2221011040400} is an apocalyptic number.

2221011040400 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 2221011040400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2767514861760).

2221011040400 is an abundant number, since it is smaller than the sum of its proper divisors (3314018683120).

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

2221011040400 is a wasteful number, since it uses less digits than its factorization.

2221011040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522121 (or 522110 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221011040400 its reverse (40401101222), we get a palindrome (2261412141622).

The spelling of 2221011040400 in words is "two trillion, two hundred twenty-one billion, eleven million, forty thousand, four hundred".