2221022021200 has 60 divisors (see below), whose sum is σ = 5403549855040. Its totient is φ = 877163114880.

The previous prime is 2221022021189. The next prime is 2221022021261. The reversal of 2221022021200 is 21202201222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 35111154 + ... + 35174353.

Almost surely, 2^{2221022021200} is an apocalyptic number.

2221022021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221022021200 is an abundant number, since it is smaller than the sum of its proper divisors (3182527833840).

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

2221022021200 is a wasteful number, since it uses less digits than its factorization.

2221022021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70285604 (or 70285593 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2221022021200 its reverse (21202201222), we get a palindrome (2242224222422).

The spelling of 2221022021200 in words is "two trillion, two hundred twenty-one billion, twenty-two million, twenty-one thousand, two hundred".