2141213321 has 4 divisors (see below), whose sum is σ = 2305922052. Its totient is φ = 1976504592.

The previous prime is 2141213317. The next prime is 2141213329. The reversal of 2141213321 is 1233121412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286963600 + 1854249721 = 16940^2 + 43061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141213321 - 2² = 2141213317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2141213293 and 2141213302.

It is not an unprimeable number, because it can be changed into a prime (2141213329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82354346 + ... + 82354371.

It is an arithmetic number, because the mean of its divisors is an integer number (576480513).

Almost surely, 2^2141213321 is an apocalyptic number.

It is an amenable number.

2141213321 is a deficient number, since it is larger than the sum of its proper divisors (164708731).

2141213321 is a wasteful number, since it uses less digits than its factorization.

2141213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164708730.

The product of its digits is 288, while the sum is 20.

The square root of 2141213321 is about 46273.2462768715. The cubic root of 2141213321 is about 1288.9022411884.

Adding to 2141213321 its reverse (1233121412), we get a palindrome (3374334733).

The spelling of 2141213321 in words is "two billion, one hundred forty-one million, two hundred thirteen thousand, three hundred twenty-one".