2105221316 has 48 divisors (see below), whose sum is σ = 4261118400. Its totient is φ = 899435520.

The previous prime is 2105221297. The next prime is 2105221343. The reversal of 2105221316 is 6131225012.

It is a super-3 number, since 3×2105221316³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2105221291 and 2105221300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783311 + ... + 785993.

It is an arithmetic number, because the mean of its divisors is an integer number (88773300).

Almost surely, 2^2105221316 is an apocalyptic number.

It is an amenable number.

2105221316 is an abundant number, since it is smaller than the sum of its proper divisors (2155897084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105221316 is a wasteful number, since it uses less digits than its factorization.

2105221316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2105221316 is about 45882.6908103699. The cubic root of 2105221316 is about 1281.6396054072.

Adding to 2105221316 its reverse (6131225012), we get a palindrome (8236446328).

The spelling of 2105221316 in words is "two billion, one hundred five million, two hundred twenty-one thousand, three hundred sixteen".