1002211221212 has 48 divisors (see below), whose sum is σ = 1872639216000. Its totient is φ = 468526559424.

The previous prime is 1002211221203. The next prime is 1002211221239. The reversal of 1002211221212 is 2121221122001.

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, 634262 + ... + 1551357.

It is an arithmetic number, because the mean of its divisors is an integer number (39013317000).

Almost surely, 2^{1002211221212} is an apocalyptic number.

It is an amenable number.

1002211221212 is a deficient number, since it is larger than the sum of its proper divisors (870427994788).

1002211221212 is a wasteful number, since it uses less digits than its factorization.

1002211221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185778 (or 2185776 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1002211221212 its reverse (2121221122001), we get a palindrome (3123432343213).

The spelling of 1002211221212 in words is "one trillion, two billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twelve".