2002122121222 has 4 divisors (see below), whose sum is σ = 3003183181836. Its totient is φ = 1001061060610.

The previous prime is 2002122121189. The next prime is 2002122121247. The reversal of 2002122121222 is 2221212212002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2002122121222.

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, 500530530304 + ... + 500530530307.

It is an arithmetic number, because the mean of its divisors is an integer number (750795795459).

Almost surely, 2^{2002122121222} is an apocalyptic number.

2002122121222 is a deficient number, since it is larger than the sum of its proper divisors (1001061060614).

2002122121222 is a wasteful number, since it uses less digits than its factorization.

2002122121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001061060613.

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

Adding to 2002122121222 its reverse (2221212212002), we get a palindrome (4223334333224).

The spelling of 2002122121222 in words is "two trillion, two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".