2120355105 has 32 divisors (see below), whose sum is σ = 3703909248. Its totient is φ = 1027238400.

The previous prime is 2120355077. The next prime is 2120355161. The reversal of 2120355105 is 5015530212.

It is a happy number.

It is not a de Polignac number, because 2120355105 - 2⁸ = 2120354849 is a prime.

It is a super-2 number, since 2×2120355105² = 8991811542599122050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240027 + ... + 248703.

It is an arithmetic number, because the mean of its divisors is an integer number (115747164).

Almost surely, 2^2120355105 is an apocalyptic number.

It is an amenable number.

2120355105 is a deficient number, since it is larger than the sum of its proper divisors (1583554143).

2120355105 is a wasteful number, since it uses less digits than its factorization.

2120355105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10177.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2120355105 is about 46047.3137653001. The cubic root of 2120355105 is about 1284.7033799856.

Adding to 2120355105 its reverse (5015530212), we get a palindrome (7135885317).

The spelling of 2120355105 in words is "two billion, one hundred twenty million, three hundred fifty-five thousand, one hundred five".