10212211121985 has 32 divisors (see below), whose sum is σ = 18384852672000. Its totient is φ = 5377569395328.

The previous prime is 10212211121977. The next prime is 10212211122023. The reversal of 10212211121985 is 58912111221201.

It is a happy number.

10212211121985 is a `hidden beast` number, since 10 + 212 + 211 + 1 + 219 + 8 + 5 = 666.

It is not a de Polignac number, because 10212211121985 - 2³ = 10212211121977 is a prime.

It is a Curzon number.

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, 478761540 + ... + 478782869.

It is an arithmetic number, because the mean of its divisors is an integer number (574526646000).

Almost surely, 2^{10212211121985} is an apocalyptic number.

10212211121985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10212211121985 is a deficient number, since it is larger than the sum of its proper divisors (8172641550015).

10212211121985 is an equidigital number, since it uses as much as digits as its factorization.

10212211121985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957544502 (or 957544496 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 36.

The spelling of 10212211121985 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, nine hundred eighty-five".