1220221100002 has 8 divisors (see below), whose sum is σ = 1926664894800. Its totient is φ = 577999468404.

The previous prime is 1220221099997. The next prime is 1220221100009. The reversal of 1220221100002 is 2000011220221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1220221100009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16055540752 + ... + 16055540827.

It is an arithmetic number, because the mean of its divisors is an integer number (240833111850).

Almost surely, 2^{1220221100002} is an apocalyptic number.

1220221100002 is a deficient number, since it is larger than the sum of its proper divisors (706443794798).

1220221100002 is a wasteful number, since it uses less digits than its factorization.

1220221100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32111081600.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220221100002 its reverse (2000011220221), we get a palindrome (3220232320223).

The spelling of 1220221100002 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred thousand, two".