1002212222122 has 4 divisors (see below), whose sum is σ = 1503318333186. Its totient is φ = 501106111060.

The previous prime is 1002212222107. The next prime is 1002212222131. The reversal of 1002212222122 is 2212222122001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 740785554721 + 261426667401 = 860689^2 + 511299^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1002212222122.

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 as a sum of consecutive naturals, namely, 250553055529 + ... + 250553055532.

Almost surely, 2^{1002212222122} is an apocalyptic number.

1002212222122 is a deficient number, since it is larger than the sum of its proper divisors (501106111064).

1002212222122 is an equidigital number, since it uses as much as digits as its factorization.

1002212222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501106111063.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1002212222122 its reverse (2212222122001), we get a palindrome (3214434344123).

The spelling of 1002212222122 in words is "one trillion, two billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".