2152221102 has 24 divisors (see below), whose sum is σ = 4668300000. Its totient is φ = 716614080.

The previous prime is 2152221089. The next prime is 2152221103. The reversal of 2152221102 is 2011222512.

2152221102 is a `hidden beast` number, since 21 + 522 + 21 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49227 + ... + 82022.

It is an arithmetic number, because the mean of its divisors is an integer number (194512500).

Almost surely, 2^2152221102 is an apocalyptic number.

2152221102 is an abundant number, since it is smaller than the sum of its proper divisors (2516078898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2152221102 is a wasteful number, since it uses less digits than its factorization.

2152221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132168 (or 132165 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2152221102 is about 46392.0370537876. The cubic root of 2152221102 is about 1291.1071763804.

Adding to 2152221102 its reverse (2011222512), we get a palindrome (4163443614).

It can be divided in two parts, 21522 and 21102, that added together give a palindrome (42624).

The spelling of 2152221102 in words is "two billion, one hundred fifty-two million, two hundred twenty-one thousand, one hundred two".