212266418850 has 72 divisors (see below), whose sum is σ = 570368962800. Its totient is φ = 56596452960.

The previous prime is 212266418831. The next prime is 212266418851. The reversal of 212266418850 is 58814662212.

212266418850 is a `hidden beast` number, since 2 + 1 + 226 + 6 + 418 + 8 + 5 + 0 = 666.

It is a super-3 number, since 3×212266418850³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 212266418796 and 212266418805.

It is not an unprimeable number, because it can be changed into a prime (212266418851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3637201 + ... + 3695099.

It is an arithmetic number, because the mean of its divisors is an integer number (7921791150).

Almost surely, 2^212266418850 is an apocalyptic number.

212266418850 is an abundant number, since it is smaller than the sum of its proper divisors (358102543950).

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

212266418850 is a wasteful number, since it uses less digits than its factorization.

212266418850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66064 (or 66056 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 212266418850 in words is "two hundred twelve billion, two hundred sixty-six million, four hundred eighteen thousand, eight hundred fifty".