2142011321 has 4 divisors (see below), whose sum is σ = 2235142272. Its totient is φ = 2048880372.

The previous prime is 2142011317. The next prime is 2142011353. The reversal of 2142011321 is 1231102412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2142011321 - 2² = 2142011317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142011321.

It is not an unprimeable number, because it can be changed into a prime (2142017321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46565441 + ... + 46565486.

It is an arithmetic number, because the mean of its divisors is an integer number (558785568).

Almost surely, 2^2142011321 is an apocalyptic number.

It is an amenable number.

2142011321 is a deficient number, since it is larger than the sum of its proper divisors (93130951).

2142011321 is an equidigital number, since it uses as much as digits as its factorization.

2142011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93130950.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2142011321 is about 46281.8681667022. The cubic root of 2142011321 is about 1289.0623398624.

Adding to 2142011321 its reverse (1231102412), we get a palindrome (3373113733).

The spelling of 2142011321 in words is "two billion, one hundred forty-two million, eleven thousand, three hundred twenty-one".