2121302101 has 16 divisors (see below), whose sum is σ = 2291333440. Its totient is φ = 1957374720.

The previous prime is 2121302087. The next prime is 2121302119. The reversal of 2121302101 is 1012031212.

It is a cyclic number.

It is not a de Polignac number, because 2121302101 - 2¹⁷ = 2121171029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121302171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301261 + ... + 308221.

It is an arithmetic number, because the mean of its divisors is an integer number (143208340).

Almost surely, 2^2121302101 is an apocalyptic number.

It is an amenable number.

2121302101 is a deficient number, since it is larger than the sum of its proper divisors (170031339).

2121302101 is a wasteful number, since it uses less digits than its factorization.

2121302101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7396.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2121302101 is about 46057.5954756650. The cubic root of 2121302101 is about 1284.8946102002.

Adding to 2121302101 its reverse (1012031212), we get a palindrome (3133333313).

The spelling of 2121302101 in words is "two billion, one hundred twenty-one million, three hundred two thousand, one hundred one".