2002112202221 has 8 divisors (see below), whose sum is σ = 2128132086840. Its totient is φ = 1877008826368.

The previous prime is 2002112202199. The next prime is 2002112202241. The reversal of 2002112202221 is 1222022112002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1782254370121 + 219857832100 = 1335011^2 + 468890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2002112202221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002112202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002112202241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229122686 + ... + 229131423.

It is an arithmetic number, because the mean of its divisors is an integer number (266016510855).

Almost surely, 2^{2002112202221} is an apocalyptic number.

It is an amenable number.

2002112202221 is a deficient number, since it is larger than the sum of its proper divisors (126019884619).

2002112202221 is a wasteful number, since it uses less digits than its factorization.

2002112202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458254383.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2002112202221 its reverse (1222022112002), we get a palindrome (3224134314223).

The spelling of 2002112202221 in words is "two trillion, two billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".