2103012321 has 32 divisors (see below), whose sum is σ = 3025397760. Its totient is φ = 1295217216.

The previous prime is 2103012259. The next prime is 2103012361. The reversal of 2103012321 is 1232103012.

It is not a de Polignac number, because 2103012321 - 2¹³ = 2103004129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2103012321.

It is not an unprimeable number, because it can be changed into a prime (2103012361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 821175 + ... + 823731.

It is an arithmetic number, because the mean of its divisors is an integer number (94543680).

Almost surely, 2^2103012321 is an apocalyptic number.

It is an amenable number.

2103012321 is a deficient number, since it is larger than the sum of its proper divisors (922385439).

2103012321 is a wasteful number, since it uses less digits than its factorization.

2103012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933.

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

The square root of 2103012321 is about 45858.6122882060. The cubic root of 2103012321 is about 1281.1911764991.

Adding to 2103012321 its reverse (1232103012), we get a palindrome (3335115333).

The spelling of 2103012321 in words is "two billion, one hundred three million, twelve thousand, three hundred twenty-one".