2102053221 has 8 divisors (see below), whose sum is σ = 3114152960. Its totient is φ = 1401368796.

The previous prime is 2102053207. The next prime is 2102053241. The reversal of 2102053221 is 1223502012.

It is not a de Polignac number, because 2102053221 - 2⁹ = 2102052709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102053194 and 2102053203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102053241) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 38926885 + ... + 38926938.

It is an arithmetic number, because the mean of its divisors is an integer number (389269120).

Almost surely, 2^2102053221 is an apocalyptic number.

It is an amenable number.

2102053221 is a deficient number, since it is larger than the sum of its proper divisors (1012099739).

2102053221 is an equidigital number, since it uses as much as digits as its factorization.

2102053221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77853832 (or 77853826 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2102053221 is about 45848.1539541125. The cubic root of 2102053221 is about 1280.9963801597.

Adding to 2102053221 its reverse (1223502012), we get a palindrome (3325555233).

The spelling of 2102053221 in words is "two billion, one hundred two million, fifty-three thousand, two hundred twenty-one".