2103120321 has 8 divisors (see below), whose sum is σ = 2894617344. Its totient is φ = 1356851760.

The previous prime is 2103120319. The next prime is 2103120343. The reversal of 2103120321 is 1230213012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2103120321 - 2¹ = 2103120319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2103120321.

It is not an unprimeable number, because it can be changed into a prime (2103120361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11307006 + ... + 11307191.

It is an arithmetic number, because the mean of its divisors is an integer number (361827168).

Almost surely, 2^2103120321 is an apocalyptic number.

It is an amenable number.

2103120321 is a deficient number, since it is larger than the sum of its proper divisors (791497023).

2103120321 is a wasteful number, since it uses less digits than its factorization.

2103120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22614231.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2103120321 is about 45859.7898054494. The cubic root of 2103120321 is about 1281.2131079411.

Adding to 2103120321 its reverse (1230213012), we get a palindrome (3333333333).

The spelling of 2103120321 in words is "two billion, one hundred three million, one hundred twenty thousand, three hundred twenty-one".