2121302032 has 10 divisors (see below), whose sum is σ = 4110022718. Its totient is φ = 1060651008.

The previous prime is 2121302017. The next prime is 2121302033. The reversal of 2121302032 is 2302031212.

It can be written as a sum of positive squares in only one way, i.e., 1758628096 + 362673936 = 41936^2 + 19044^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 132581377 = 2121302032 / (2 + 1 + 2 + 1 + 3 + 0 + 2 + 0 + 3 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2121301997 and 2121302015.

It is not an unprimeable number, because it can be changed into a prime (2121302033) 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 as a sum of consecutive naturals, namely, 66290673 + ... + 66290704.

Almost surely, 2^2121302032 is an apocalyptic number.

It is an amenable number.

2121302032 is a deficient number, since it is larger than the sum of its proper divisors (1988720686).

2121302032 is a wasteful number, since it uses less digits than its factorization.

2121302032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132581385 (or 132581379 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2121302032 is about 46057.5947266029. The cubic root of 2121302032 is about 1284.8945962689.

Adding to 2121302032 its reverse (2302031212), we get a palindrome (4423333244).

The spelling of 2121302032 in words is "two billion, one hundred twenty-one million, three hundred two thousand, thirty-two".