2102002221 has 32 divisors (see below), whose sum is σ = 3083472000. Its totient is φ = 1263156480.

The previous prime is 2102002219. The next prime is 2102002249. The reversal of 2102002221 is 1222002012.

It is not a de Polignac number, because 2102002221 - 2¹ = 2102002219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102002197 and 2102002206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102002211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2636995 + ... + 2637791.

It is an arithmetic number, because the mean of its divisors is an integer number (96358500).

Almost surely, 2^2102002221 is an apocalyptic number.

It is an amenable number.

2102002221 is a deficient number, since it is larger than the sum of its proper divisors (981469779).

2102002221 is a wasteful number, since it uses less digits than its factorization.

2102002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2102002221 is about 45847.5977669496. The cubic root of 2102002221 is about 1280.9860202343.

Adding to 2102002221 its reverse (1222002012), we get a palindrome (3324004233).

The spelling of 2102002221 in words is "two billion, one hundred two million, two thousand, two hundred twenty-one".