2002001221222 has 4 divisors (see below), whose sum is σ = 3003001831836. Its totient is φ = 1001000610610.

The previous prime is 2002001221217. The next prime is 2002001221237. The reversal of 2002001221222 is 2221221002002.

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

It is a junction number, because it is equal to n+sod(n) for n = 2002001221196 and 2002001221205.

It is a congruent number.

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, 500500305304 + ... + 500500305307.

It is an arithmetic number, because the mean of its divisors is an integer number (750750457959).

Almost surely, 2^{2002001221222} is an apocalyptic number.

2002001221222 is a deficient number, since it is larger than the sum of its proper divisors (1001000610614).

2002001221222 is a wasteful number, since it uses less digits than its factorization.

2002001221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001000610613.

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

Adding to 2002001221222 its reverse (2221221002002), we get a palindrome (4223222223224).

The spelling of 2002001221222 in words is "two trillion, two billion, one million, two hundred twenty-one thousand, two hundred twenty-two".