2101221002 has 16 divisors (see below), whose sum is σ = 3199398912. Its totient is φ = 1034784240.

The previous prime is 2101220941. The next prime is 2101221011. The reversal of 2101221002 is 2001221012.

It is a happy number.

It is an unprimeable number.

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, 147548 + ... + 161160.

It is an arithmetic number, because the mean of its divisors is an integer number (199962432).

Almost surely, 2^2101221002 is an apocalyptic number.

2101221002 is a deficient number, since it is larger than the sum of its proper divisors (1098177910).

2101221002 is a wasteful number, since it uses less digits than its factorization.

2101221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14773.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2101221002 is about 45839.0772376583. The cubic root of 2101221002 is about 1280.8273057463.

Adding to 2101221002 its reverse (2001221012), we get a palindrome (4102442014).

The spelling of 2101221002 in words is "two billion, one hundred one million, two hundred twenty-one thousand, two".