2102320051 has 4 divisors (see below), whose sum is σ = 2264036992. Its totient is φ = 1940603112.

The previous prime is 2102320021. The next prime is 2102320063. The reversal of 2102320051 is 1500232012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102320051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102320021) 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, 80858451 + ... + 80858476.

It is an arithmetic number, because the mean of its divisors is an integer number (566009248).

Almost surely, 2^2102320051 is an apocalyptic number.

2102320051 is a deficient number, since it is larger than the sum of its proper divisors (161716941).

2102320051 is a wasteful number, since it uses less digits than its factorization.

2102320051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161716940.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2102320051 is about 45851.0637935479. The cubic root of 2102320051 is about 1281.0505801515.

Adding to 2102320051 its reverse (1500232012), we get a palindrome (3602552063).

The spelling of 2102320051 in words is "two billion, one hundred two million, three hundred twenty thousand, fifty-one".