1020021221222 has 32 divisors (see below), whose sum is σ = 1605497241600. Its totient is φ = 485457508800.

The previous prime is 1020021221209. The next prime is 1020021221239. The reversal of 1020021221222 is 2221221200201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020021221222.

It is a congruent number.

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, 570029 + ... + 1537847.

It is an arithmetic number, because the mean of its divisors is an integer number (50171788800).

Almost surely, 2^{1020021221222} is an apocalyptic number.

1020021221222 is a deficient number, since it is larger than the sum of its proper divisors (585476020378).

1020021221222 is a wasteful number, since it uses less digits than its factorization.

1020021221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968132.

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

Adding to 1020021221222 its reverse (2221221200201), we get a palindrome (3241242421423).

The spelling of 1020021221222 in words is "one trillion, twenty billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".