1002221122212 has 36 divisors (see below), whose sum is σ = 2541644401296. Its totient is φ = 332985515760.

The previous prime is 1002221122193. The next prime is 1002221122213. The reversal of 1002221122212 is 2122211222001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1002221122213) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 45330114 + ... + 45352217.

Almost surely, 2^{1002221122212} is an apocalyptic number.

1002221122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002221122212 is an abundant number, since it is smaller than the sum of its proper divisors (1539423279084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002221122212 is a wasteful number, since it uses less digits than its factorization.

1002221122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90682648 (or 90682643 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1002221122212 its reverse (2122211222001), we get a palindrome (3124432344213).

The spelling of 1002221122212 in words is "one trillion, two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".