1021220002222 has 16 divisors (see below), whose sum is σ = 1756292009472. Its totient is φ = 436258428120.

The previous prime is 1021220002219. The next prime is 1021220002241. The reversal of 1021220002222 is 2222000221201.

It is a junction number, because it is equal to n+sod(n) for n = 1021220002196 and 1021220002205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117269418 + ... + 117278125.

It is an arithmetic number, because the mean of its divisors is an integer number (109768250592).

Almost surely, 2^{1021220002222} is an apocalyptic number.

1021220002222 is a deficient number, since it is larger than the sum of its proper divisors (735072007250).

1021220002222 is a wasteful number, since it uses less digits than its factorization.

1021220002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234547863.

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

Adding to 1021220002222 its reverse (2222000221201), we get a palindrome (3243220223423).

The spelling of 1021220002222 in words is "one trillion, twenty-one billion, two hundred twenty million, two thousand, two hundred twenty-two".