2102256105 has 8 divisors (see below), whose sum is σ = 3363609792. Its totient is φ = 1121203248.

The previous prime is 2102256067. The next prime is 2102256127. The reversal of 2102256105 is 5016522012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102256105 - 2¹⁸ = 2101993961 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 70075189 + ... + 70075218.

It is an arithmetic number, because the mean of its divisors is an integer number (420451224).

Almost surely, 2^2102256105 is an apocalyptic number.

It is an amenable number.

2102256105 is a deficient number, since it is larger than the sum of its proper divisors (1261353687).

2102256105 is a wasteful number, since it uses less digits than its factorization.

2102256105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140150415.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2102256105 is about 45850.3664652748. The cubic root of 2102256105 is about 1281.0375915026.

Adding to 2102256105 its reverse (5016522012), we get a palindrome (7118778117).

The spelling of 2102256105 in words is "two billion, one hundred two million, two hundred fifty-six thousand, one hundred five".