2221201120400 has 60 divisors (see below), whose sum is σ = 5347045392192. Its totient is φ = 886714005120.

The previous prime is 2221201120399. The next prime is 2221201120417. The reversal of 2221201120400 is 40211021222.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5318684 + ... + 5721083.

Almost surely, 2^{2221201120400} is an apocalyptic number.

2221201120400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221201120400 is an abundant number, since it is smaller than the sum of its proper divisors (3125844271792).

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

2221201120400 is a wasteful number, since it uses less digits than its factorization.

2221201120400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11040288 (or 11040277 counting only the distinct ones).

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

Adding to 2221201120400 its reverse (40211021222), we get a palindrome (2261412141622).

The spelling of 2221201120400 in words is "two trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty thousand, four hundred".