10212105856 has 32 divisors (see below), whose sum is σ = 20777302080. Its totient is φ = 4997410560.

The previous prime is 10212105851. The next prime is 10212105979. The reversal of 10212105856 is 65850121201.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (10212105851) 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, 842730 + ... + 854761.

It is an arithmetic number, because the mean of its divisors is an integer number (649290690).

Almost surely, 2^10212105856 is an apocalyptic number.

10212105856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10212105856 is an abundant number, since it is smaller than the sum of its proper divisors (10565196224).

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

10212105856 is an equidigital number, since it uses as much as digits as its factorization.

10212105856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697552 (or 1697540 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 10212105856 in words is "ten billion, two hundred twelve million, one hundred five thousand, eight hundred fifty-six".