2102242441221 has 48 divisors (see below), whose sum is σ = 3290634547200. Its totient is φ = 1285609971456.

The previous prime is 2102242441219. The next prime is 2102242441231. The reversal of 2102242441221 is 1221442422012.

2102242441221 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 242 + 4 + 412 + 2 + 1 = 666.

It is not a de Polignac number, because 2102242441221 - 2¹ = 2102242441219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102242441231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12501820 + ... + 12668858.

It is an arithmetic number, because the mean of its divisors is an integer number (68554886400).

Almost surely, 2^{2102242441221} is an apocalyptic number.

It is an amenable number.

2102242441221 is a deficient number, since it is larger than the sum of its proper divisors (1188392105979).

2102242441221 is a wasteful number, since it uses less digits than its factorization.

2102242441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167730 (or 167727 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 2102242441221 its reverse (1221442422012), we get a palindrome (3323684863233).

The spelling of 2102242441221 in words is "two trillion, one hundred two billion, two hundred forty-two million, four hundred forty-one thousand, two hundred twenty-one".