2002112101221 has 8 divisors (see below), whose sum is σ = 2785547271360. Its totient is φ = 1276709165952.

The previous prime is 2002112101217. The next prime is 2002112101271. The reversal of 2002112101221 is 1221012112002.

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

It is not a de Polignac number, because 2002112101221 - 2² = 2002112101217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002112101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002112101201) 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, 14508058636 + ... + 14508058773.

It is an arithmetic number, because the mean of its divisors is an integer number (348193408920).

Almost surely, 2^{2002112101221} is an apocalyptic number.

It is an amenable number.

2002112101221 is a deficient number, since it is larger than the sum of its proper divisors (783435170139).

2002112101221 is a wasteful number, since it uses less digits than its factorization.

2002112101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29016117435.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2002112101221 its reverse (1221012112002), we get a palindrome (3223124213223).

The spelling of 2002112101221 in words is "two trillion, two billion, one hundred twelve million, one hundred one thousand, two hundred twenty-one".